20 Box Build Assembly Manufacturers for Complete Products

Box build assembly manufacturers combine electronics, enclosures, wiring and other parts into an integrated product. The right partner depends on what you need delivered: an assembled enclosure, a configured and tested device, or a packaged unit ready for shipment. A supplier’s PCB assembly capability alone does not answer that question.

This guide compares 20 manufacturers using their published integration scope. Use the quick picks to find a starting point, then check the proposed factory, production model and acceptance requirements before requesting a quote.

Quick Picks

• Best for prototype-to-production turnkey box builds — OrinewPCB. Its published offering combines PCBA, enclosure and harness integration with firmware loading, system testing and packaging for prototypes and smaller production programs.
• Best for complex electromechanical system integration — ESCATEC. Its published scope extends to cabinets, mechatronics, software loading and system verification.
• Best for complex equipment and machinery builds — PEKO Precision Products. Its offering connects mechanical fabrication with electrical assembly and system integration.
• Best for cable-intensive product integration — EC Electronics. Its service brings together cable assembly, PCBA, mechanical integration and finished-product delivery.
• Best for industrial control cabinets in Germany — HANZA Assembly Remscheid. The named factory lists control cabinet construction, device manufacturing and final testing.
• Best for packaging and direct-shipment support — Active EMS. Its published process includes functional testing, customer-specific packaging and shipment to end clients or installation providers.

Publisher disclosure: This guide appears on OrinewPCB’s website, so our brand is listed first. The other manufacturers are not ranked by performance. “Best for” labels are editorial matches to published capabilities, rather than awards based on independent factory testing.

How These Manufacturers Were Selected

Each manufacturer has an official page describing integration beyond a populated circuit board. We considered mechanical and enclosure work, wiring, product-level testing, configuration and delivery scope. The reviewed service descriptions support inclusion; they do not establish that every factory offers every listed process.

The selection uses public information reviewed in October 2026. Directories and other manufacturers’ rankings were used only to discover candidates. Related operations are identified where relevant: Cyient DLM and the former Altek operation appear as one entry.

This is a sourcing shortlist, not an independent supplier audit. Order acceptance, minimum quantities, prices, certificates and delivery schedules require confirmation for your product and proposed manufacturing site.

Compare 20 Box Build Assembly Manufacturers at a Glance

Compare the manufacturing route and integration scope before choosing a supplier by company size or name.

Locations below distinguish headquarters from named production bases or networks. A dash means a single founding year was not established consistently in the reviewed materials. Operation and group dates are labeled separately. Buying considerations identify matters to assess; they are not allegations of poor performance or statements that a supplier will reject your order.

On smaller screens, scroll the table horizontally. Competitor website addresses are shown as plain text for identification.

What Should a Complete Box Build Include?

A complete box build should end at a defined, verifiable handoff. Suppliers describe different levels of integration under the same service name. For a design-side explanation of how enclosures, cabling, firmware and PCBAs come together, see Altium’s box build assembly overview.

Define the Handoff: Assembled Unit, Tested Product, or Packaged Shipment

Write the required endpoint into the quotation request:

• Assembled unit: The specified boards, enclosure, cables and mechanical parts are installed.
• Tested and configured product: The agreed firmware, settings and acceptance tests are completed, with records attached to the product or batch.
• Packaged shipment: Approved labels, accessories, instructions and protective or retail packaging are included, with a defined dispatch destination.

Also identify who supplies each part. One manufacturer may coordinate the entire program while purchasing specialist components or subassemblies. Confirm process ownership if in-house fabrication matters to your sourcing decision.

For the underlying manufacturing stages, see our box build assembly guide.

20 Manufacturers to Evaluate for Your Product

These manufacturers differ in mechanical scope, configuration work and delivery responsibilities. The profiles describe those differences and the projects they suit. Capability descriptions come from published company materials; application examples and procurement analysis are editorial guidance.

1. OrinewPCB: Best for prototype-to-production turnkey box builds

Headquarters / production base: Shenzhen, China (published manufacturing base)
Founded: 2011 · Business type: PCB and electronics manufacturer

• Main products: PCBs, PCBAs, harnesses and integrated electronic units.
• Published capabilities: Board fabrication, enclosure integration, firmware, system test and packaging.
• Buying advantage: Board-level and final-product work in one proposed program.
• Trade-off to check: Overseas freight, import arrangements and return handling need an agreed plan.
• Official website: pcbandassembly.com

OrinewPCB’s turnkey box build offering describes PCBA, custom enclosures, wire harnesses, firmware programming, system testing and packaging. Its stated focus includes prototypes and low-to-medium-volume programs.

A gateway, controller or instrument with a defined PCB but unfinished enclosure and wiring requirements fits this service scope. Treating those parts as one product brings enclosure fit, harness routing and the loaded firmware into the same build definition.

For prototype-to-production work, separate the engineering build from the repeat-order configuration. The first establishes fit and assembly details; subsequent orders need the released files and acceptance limits. US and European delivery also adds packaging, shipment terms and a return route to the product handoff.

2. ESCATEC: Best for complex electromechanical integration

Headquarters / production base: Penang, Malaysia (group HQ)
Founded: 1984 · Business type: Electronics and mechatronics manufacturer

• Main products: Electronic devices, cabinets, racks and mechatronic assemblies.
• Published capabilities: Enclosures, cabling, panel wiring, software loading and system verification.
• Buying advantage: Mechanical, electrical and software integration within the published offering.
• Trade-off to check: Each proposed site and system-test scope needs qualification.
• Official website: escatec.com

ESCATEC publishes a box build and system integration scope covering enclosures, wiring looms, panel wiring, cabinets, software loading and system testing. It also describes mechatronic and electropneumatic assemblies.

Cabinets and mechatronic products require the electrical and mechanical interfaces to work together. A power supply needs mounting and wiring space; a loom routed near moving parts needs an agreed path; the delivered software must match the installed hardware.

An interface drawing makes these dependencies visible before final integration. When a bracket or enclosure changes after a pilot, the associated harness route and assembly instructions may also need revision. This cross-subsystem coordination is the reason to consider ESCATEC’s broader integration scope.

3. Incap: Best for multi-stage product integration

Headquarters / production base: Helsinki, Finland (HQ)
Founded: 1985 · Business type: Electronics manufacturing services group

• Main products: PCBAs, cable assemblies and integrated devices.
• Published capabilities: Mechanical assembly, PCB mounting, harness integration and configured units.
• Buying advantage: Published coverage from subassemblies to finished systems.
• Trade-off to check: Integration depth and operating model vary with the product and site.
• Official website: incapcorp.com

Incap’s box build services span PCB mounting, mechanical assembly, harness integration and configured units. Its page describes functional and end-of-line testing, with burn-in and delivery configuration where required.

Incap’s distinction between subassemblies and configured units supports different outsourcing boundaries. An OEM could retain an existing enclosure supplier while placing PCB mounting, harness installation and final configuration with the integrator. A more complete order could include the enclosure itself.

Map that boundary to the product BOM: which parts arrive as completed subassemblies, which are installed during integration, and what leaves as a released unit. This makes the proposed assembly stages explicit without assuming that every build uses the same production flow.

4. TT Electronics: Best for higher-level OEM assembly programs

Headquarters / production base: United Kingdom (corporate base; production site by project)
Founded: — · Business type: Electronics and manufacturing group

• Main products: Electronic assemblies and higher-level integrated systems.
• Published capabilities: PCBA, system assembly, integration, test and fulfillment support.
• Buying advantage: Published path from board assembly into system delivery.
• Trade-off to check: Engineering and fulfillment responsibilities need a factory-specific proposal.
• Official website: ttelectronics.com

TT Electronics presents box build and high-level assembly as an extension from PCBA into vertical system integration, assembly and test. Its page also discusses order fulfillment and logistics support.

Higher-level assembly adds responsibilities that a board-only order may leave with the OEM, including mounting subassemblies, preparing work instructions and coordinating the delivered configuration. TT Electronics’ published PCBA-to-system offering provides a basis for discussing that wider scope.

Configured orders also need a route from customer options to the correct hardware, software and pack-out. Fixture development and test-software maintenance belong in that engineering scope, while recurring assembly belongs in the production price. Separating them makes repeat-order costs easier to interpret.

5. Komaspec: Best for custom products with substantial mechanical content

Headquarters / production base: Guangzhou, China (principal factory cluster)
Founded: 2005 · Business type: Custom contract manufacturer

• Main products: Metal and plastic parts, enclosures, PCBAs and harnesses.
• Published capabilities: Mechanical fabrication, electronics integration, firmware and pack-out.
• Buying advantage: Sheet metal, plastics and electronics can be planned as one build.
• Trade-off to check: Its published medium-to-high-volume focus needs checking against the forecast.
• Official website: komaspec.com

Komaspec’s turnkey box build page describes metal and plastic enclosures, PCBAs, cable harnesses, firmware loading, testing and packing. It positions its production toward high-mix, medium-to-high-volume custom builds.

Komaspec is relevant when the enclosure is a custom part of the product. Brackets, molded features and cable access affect both physical fit and the assembly sequence, so housing changes and electronic interfaces benefit from a combined review.

Its stated medium-to-high-volume positioning makes tooling and the expected repeat quantity important to the comparison. A pilot and a recurring build may need different fabrication routes. Tool ownership and revision costs explain that transition more clearly than applying a production unit price to an early engineering batch.

6. EC Electronics: Best for cable-intensive products for European delivery

Headquarters / production base: Basingstoke, UK (published company location)
Founded: 1984 · Business type: Electronics and cable assembly manufacturer

• Main products: PCBAs, cable assemblies, control panels and complete devices.
• Published capabilities: Cable and mechanical integration, testing, packaging and logistics.
• Buying advantage: Cable assembly and finished-product integration in its service range.
• Trade-off to check: UK, Dutch and Romanian operations require a defined production allocation.
• Official website: ecelectronics.com

EC Electronics combines PCB assembly, cable assembly, mechanical integration, testing and logistics in its electronics box build service. The page identifies facilities in the UK, the Netherlands and Romania.

EC Electronics’ cable-assembly background is relevant when connectors and internal wiring account for substantial integration work. A cable part number alone does not describe its installed condition: pinout, retention and routing define how it connects the board to the rest of the product.

For a cable-intensive device, distinguish checks on the loose harness from checks after installation. The published European facilities offer production-route options; the delivery plan should identify where harness production, final integration and dispatch occur.

7. Season Group: Best for programs comparing regional manufacturing routes

Headquarters / production base: UK, Mexico, Malaysia and China (production network)
Founded: 1975 · Business type: Electronics design and manufacturing group

• Main products: PCBAs, harnesses and integrated electromechanical products.
• Published capabilities: Site-dependent system assembly, cabling and configure-to-order work.
• Buying advantage: Published factory-level capability descriptions.
• Trade-off to check: Group capabilities are distributed across sites and need transfer planning.
• Official website: seasongroup.com

Season Group’s factory capability listings identify different combinations of PCBA, harness assembly, system assembly and configure-to-order work across its production network.

Season Group’s factory-level listings help compare regional routes rather than assuming that each location performs the group’s entire service range. This matters when a launch site may later be joined or replaced by another production location.

A transfer involves more than sending the BOM. Work instructions, approved samples, fixture information and production software carry the build knowledge needed at the receiving site. The transfer plan should show how that information is reproduced and how the new site’s first units are accepted.

8. PEKO Precision Products: Best for complex equipment and machinery builds

Headquarters / production base: Rochester, New York, USA
Founded: 1966 · Business type: Equipment and assembly contract manufacturer

• Main products: Machinery, cabinets, equipment modules and electromechanical systems.
• Published capabilities: Mechanical fabrication, electrical wiring, subsystem integration and final test.
• Buying advantage: Mechanical manufacturing and system assembly in the published scope.
• Trade-off to check: Equipment engineering and acceptance work may dominate a simple assembly brief.
• Official website: pekoprecision.com

PEKO’s box build assembly services combine mechanical fabrication, subsystem integration, wiring and testing. Its contract assembly overview describes high-mix, low-to-mid-volume OEM builds.

PEKO’s equipment-oriented scope is relevant when structural parts, electrical subsystems and their installation form a substantial part of the build. Alignment and access for assembly or service can matter alongside the electronics.

A build breakdown can separate fabricated parts, purchased equipment and final integration. Acceptance then follows the same structure: checks on a subsystem do not by themselves demonstrate the completed machine’s operation. A simple board in a purchased enclosure would use less of this mechanical manufacturing and equipment-integration offering.

9. Cyient DLM — Former Altek Operation: Best for US production linking PCBA and system assembly

Headquarters / production base: Torrington, Connecticut, USA (former Altek operation)
Founded: 1972 (Altek operation) · Business type: US electronics manufacturing operation within Cyient DLM

• Main products: PCBAs, harnesses, panels, chassis and complete systems.
• Published capabilities: Board, cable and mechanical assembly with higher-level integration.
• Buying advantage: Established board, cable and box-build operation.
• Trade-off to check: The group, operating company and nominated factory must be distinguished.
• Official website: cyientdlmelectronics.com

The US operation historically known as Altek publishes PCBA, cable, harness, panel, chassis and complete-system assembly services. Its current company page uses the Cyient DLM Electronics identity, and identifies the manufacturing facility in Torrington, Connecticut.

This profile represents one US manufacturing operation within Cyient DLM, not two independent alternatives named Altek and Cyient DLM. The operation’s history and current identity should therefore be read together when comparing company backgrounds.

Its board, cable and chassis work spans several levels of an electronic product. For a US production program, distinguish work performed by this operation from any support supplied by the wider group. That distinction identifies which organization releases the finished assembly without repeating the group’s combined capability list.

10. Sierra Assembly Technology: Best for PCBA programs extending into finished products

Headquarters / production base: Chino, California, USA (manufacturing location)
Founded: 1982 · Business type: PCB and electronic assembly manufacturer

• Main products: PCBAs, wired enclosures and configured electronic products.
• Published capabilities: Hardware installation, wiring, firmware, serialization and pack-out.
• Buying advantage: Published board-to-enclosure and configuration services.
• Trade-off to check: Customer-supplied material and final release records need agreement.
• Official website: sierraassembly.com

Sierra Assembly Technology’s box build service includes enclosure assembly, wiring, firmware loading, serialization, testing and packaging preparation.

Sierra’s board-to-enclosure scope suits an OEM extending an existing PCBA program into a configured product. When the boards and housings arrive from different suppliers, their incoming condition becomes part of assembly planning.

A fit problem can originate in the board dimensions, enclosure features or mounting hardware. Recording the affected revision and incoming checks gives the parties a basis for resolving it. Serialization also provides a way to connect the delivered unit with its approved firmware and final test record.

11. Star Engineering: Best for electrical and electromechanical assembly

Headquarters / production base: North Attleboro, Massachusetts, USA
Founded: 1980 · Business type: Electronic contract manufacturer

• Main products: PCBAs, cable assemblies and electromechanical products.
• Published capabilities: Product and system assembly, configuration, testing and labeling.
• Buying advantage: Product testing and packaging appear alongside system assembly.
• Trade-off to check: Burn-in and other tests must be specified rather than assumed.
• Official website: starengineeringinc.com

Star Engineering lists system-level and product assembly, packaging, labeling, configuration, product testing and burn-in in its box build offering.

Star Engineering’s combination of board, cable and mechanical assembly is relevant when wiring and installation contribute as much to the finished unit as soldered electronics. Its published product-testing and pack-out services extend the discussion to the released product.

The test sequence should distinguish checks before enclosure closure from checks on the completed unit. If burn-in is required, the operating condition, duration and acceptance limits define the work being purchased. A capability label alone does not define that test process.

12. EMS Solutions: Best for combining board and final assembly purchases

Headquarters / production base: Ogden, Utah, USA
Founded: 2000 · Business type: Electronics contract manufacturer

• Main products: PCBAs, cable subassemblies and finished electronic products.
• Published capabilities: Enclosure and harness integration, product test, packaging and labels.
• Buying advantage: Finished-product integration is explicitly included in its offering.
• Trade-off to check: Material ownership and fault-resolution responsibilities need definition.
• Official website: myemssolutions.com

EMS Solutions describes box build assembly as finished-product integration extending beyond PCB production. Its scope includes enclosures, cable routing, subassemblies, testing, packaging and labeling.

EMS Solutions’ finished-product scope gives buyers a route to combine board and final assembly purchases. A hybrid material plan can still retain selected parts from an OEM’s existing vendors.

That arrangement needs a clear boundary between customer-owned stock and manufacturer-purchased material, including approved substitutions and surplus inventory. Troubleshooting also crosses that boundary when a failed unit contains both. A named owner for the investigation connects the board and final-assembly work instead of leaving each team to examine only its own stage.

13. Carlton Industries Corporation: Best for prototypes progressing into repeat assembly

Headquarters / production base: Hamden, Connecticut, USA
Founded: 1994 · Business type: Electronic contract manufacturer

• Main products: PCBAs, wired enclosures and integrated assemblies.
• Published capabilities: Mechanical mounting, wiring and integration from PCBA to product.
• Buying advantage: Published support for prototype and ongoing production.
• Trade-off to check: The production forecast and final inspection scope need confirmation.
• Official website: cicems.com

Carlton Industries describes a route from PCBA through wiring, mechanical installation and final integration in its box build assembly service. The page discusses both prototypes and ongoing production.

Carlton’s stated prototype and ongoing-production scope is relevant to an OEM moving from a sample build to repeat orders. That transition needs the assembly details discovered during prototyping to become controlled instructions.

For example, a sample may expose an enclosure-fit problem or an impractical cable route. Resolving it is only part of the work: the drawing, BOM or assembly instruction must also reflect the approved change. The repeat batch can then be inspected against the released revision rather than the prototype team’s memory.

14. Green Circuits: Best for extending board-level development into product assembly

Headquarters / production base: San Jose, California, USA (published base)
Founded: 2006 · Business type: Electronics manufacturing services provider

• Main products: PCBAs, prototypes and integrated electronic products.
• Published capabilities: Board manufacturing support, system assembly, test and packaging.
• Buying advantage: Assembly, engineering and test services in one published portfolio.
• Trade-off to check: Mechanical responsibility needs explicit definition for the box-build order.
• Official website: greencircuits.com

Green Circuits lists system/box build alongside PCB assembly, engineering, testing and supply-chain services. Its services overview describes delivery of integrated, tested and packaged products.

Green Circuits’ wider board, engineering and test portfolio is relevant when PCB development must extend into final product assembly. The mechanical scope still distinguishes installing a purchased housing from managing a custom enclosure and its fixtures.

Development samples may use temporary assembly methods while the design is being refined. Separating those samples from the released production build prevents a workaround from silently becoming a recurring instruction. Product-level acceptance can then address the enclosure, connections and configuration as an integrated unit.

15. NOTE: Best for complete products with several configuration variants

Headquarters / production base: Stockholm, Sweden (HQ)
Founded: 1999 (group) · Business type: Electronics manufacturing group

• Main products: PCBAs, subassemblies and complete electronic products.
• Published capabilities: Mechanics, cabling, software loading, final test and packaging.
• Buying advantage: Published emphasis on documented finished systems.
• Trade-off to check: Configuration and test arrangements need confirmation at the selected factory.
• Official website: note-ems.com

NOTE’s box build and system integration service combines electronics, mechanics and cabling with software loading, final testing and packaging. It also describes tested and documented systems.

NOTE’s combination of electronics, mechanics, software loading and final testing is relevant to products sold in several configurations. The delivered variant includes more than its hardware revision: firmware, label and accessory pack may also change.

A unit can pass an electrical test and still receive the wrong configuration at pack-out. Following an order from variant selection through release shows how those elements stay aligned. A unit record connecting the selected configuration with test and dispatch information makes that workflow easier to assess.

16. Scanfil: Best for products combining mechanical and electronic supply chains

Headquarters / production base: Sievi, Finland (group origin and published base)
Founded: 1976 (business origin) · Business type: Electronics and mechanical manufacturing group

• Main products: PCBAs, mechanical parts, modules and complete systems.
• Published capabilities: Electronics, mechanics, system assembly, testing and packaging.
• Buying advantage: Published module-to-product integration services.
• Trade-off to check: The division of work between sites and purchased content needs clarification.
• Official website: scanfil.com

Scanfil’s manufacturing services include electronics manufacturing, mechanical assembly and integration from modules to complete products. Its overview describes prototyping through volume production and delivery of tested, packaged units.

Scanfil’s electronics and mechanical services are relevant to products with meaningful manufactured mechanical content as well as PCBAs. A make-or-buy breakdown separates purchased items, manufactured parts and final integration, making their interfaces visible.

For a long-lived industrial device, an obsolete component or enclosure revision may affect the approved product definition after production begins. Change control and replacement support therefore belong in lifecycle planning. This is a different requirement from arranging only the first assembly batch.

17. Active EMS: Best for packaging and direct-shipment programs

Headquarters / production base: United Kingdom (reviewed service location)
Founded: — · Business type: Contract electronics manufacturing provider

• Main products: Electronic subassemblies and packaged integrated products.
• Published capabilities: Enclosure and cable integration, functional test, barcoding and dispatch.
• Buying advantage: Published customer-specific packaging and direct-shipment workflow.
• Trade-off to check: Destination data, label revisions and return routing need operational controls.
• Official website: active-ems.co.uk

Active EMS’s box build page covers enclosure support, cabling and component installation. It also describes functional testing, customer-specific packaging, barcoding and direct shipment.

Active EMS’s described endpoint includes dispatch to an end customer or installer. Packaging is therefore part of the product definition: artwork, manuals, accessories and destination instructions must match the released device.

An engineering change can affect labels or pack-out even if the assembly process barely changes. Order and revision information need to reach the dispatch stage as well as the production line. Return records then connect a shipment issue to the product configuration that was actually delivered.

18. EMS, Inc.: Best for BOM-to-finished-product manufacturing programs

Headquarters / production base: Lincoln, Arkansas, USA (named manufacturing facility)
Founded: — · Business type: Electronics and cable contract manufacturer

• Main products: PCBAs, cable assemblies and integrated electronic units.
• Published capabilities: Component sourcing, electromechanical assembly, final test and shipment.
• Buying advantage: A named facility with published sourcing-to-dispatch scope.
• Trade-off to check: Consigned inventory, fixtures and purchased-material liabilities need agreement.
• Official website: emscable.com

EMS, Inc. describes component and enclosure sourcing, PCBA, electromechanical integration, final testing, packaging and shipment in its box build offering. The page identifies its Lincoln, Arkansas facility.

EMS, Inc.’s published sourcing-to-dispatch scope is relevant when the OEM wants one manufacturing agreement to cover material procurement and integration. If EMS accepts a consigned arrangement, existing specialist suppliers can contribute parts; separate those items from manufacturer-purchased stock in the material plan.

Shortages, surplus purchases and rejected incoming material affect the program differently depending on inventory ownership. Those liabilities can change total cost even when two recurring assembly prices appear similar. Fixture-development charges should likewise be separated from the unit build price.

19. EPSa: Best for German device and cabinet-scale integration

Headquarters / production base: Saalfeld and Jena, Germany (published locations)
Founded: — · Business type: Electronic systems development and manufacturing provider

• Main products: Electronic devices, modules and cabinet-sized assemblies.
• Published capabilities: Electronics, mechanics, cabling and enclosure integration.
• Buying advantage: Published coverage from small modules to larger enclosed systems.
• Trade-off to check: A module handoff and a finished-product release require different acceptance scopes.
• Official website: epsa.de

EPSa describes integration of electronics, mechanics, cables and enclosures, from small modules through devices with additional mechanical content to cabinet-sized systems. Its company materials identify Saalfeld and Jena as its German locations.

EPSa’s module-to-cabinet range supports different levels of product integration. A functioning module delivered to another integrator and a finished device delivered to an end user have different release boundaries.

For the module, acceptance may stop at defined interfaces; for the complete product, configuration, wiring, enclosure integration and pack-out may also be included. Specifying that boundary explains the required work more clearly than treating every box build as the same deliverable. Historical company milestones are separate from this current manufacturing scope.

20. HANZA Assembly Remscheid: Best for industrial control cabinets in Germany

Headquarters / production base: Remscheid, Germany (named factory)
Founded: 2008 (HANZA group) · Business type: Industrial electronics and control-cabinet operation

• Main products: Control cabinets, industrial electronics and integrated devices.
• Published capabilities: Device manufacturing, final testing, prototypes and series assembly.
• Buying advantage: Factory-specific published engineering and device-manufacturing services.
• Trade-off to check: The nominated factory and any wider-group contributions need separate qualification.
• Official website: hanza.com

HANZA’s Remscheid factory page identifies control cabinet construction and industrial electronics. Its services include box build, device manufacturing with final testing, prototypes, series production and shipping logistics.

HANZA Assembly Remscheid is a named German operation focused on control cabinets and industrial electronics. Its published prototype and series-production services make the individual factory, rather than the group as a whole, the basis for this comparison.

For a cabinet-based project, wiring documentation and the required functional demonstration define the completed system’s acceptance. Parts or processes from the wider group can contribute to the build, but the handoff should identify the operation responsible for releasing the finished cabinet.

How to Shortlist a Manufacturer for US and European Delivery

Reduce the list by matching your product to a specific factory and an agreed delivery scope. The checklist below brings together the factory, test and delivery checks that apply across the shortlist.

Match the Factory to Your Product, Batch Size, and Engineering Needs

A released design needs a different manufacturing proposal from a prototype with unresolved engineering work. Compare candidates against the same product dimensions, first-build quantity, repeat-order forecast and variant requirements.

The following checklist links common sourcing requirements to documents that help assess a manufacturing proposal.

These documents help assess readiness; they do not replace samples, contract review or a factory assessment where your program requires one.

Confirm Final Test, Firmware Control, and Traceability

Specify the product’s acceptance criteria separately from board inspection. Identify what the finished unit must do, the firmware and settings it must contain, and the record needed to release it.

For example, an illustrative controller specification could require verification of its input/output functions and firmware identifier after enclosure assembly. The actual limits must come from your product requirements. Do not infer complete test coverage from a supplier’s list of inspection equipment.

Clarify Sourcing, Compliance Responsibilities, and After-Sales Support

Agree who approves replacement components, resolves mechanical fit issues and authorizes engineering changes. Ask who retains released files, fixture information and test software if production moves later.

For US or European delivery, also identify the destination requirements, supporting documentation, shipment terms and repair route. Review any manufacturing quality-system certificate for its entity, site and scope, and discuss product-specific approvals separately. ISO explains that certification is performed by external certification bodies; an ISO standard name on a website is not itself proof of certification.

What to Send in a Box Build RFQ

Send every shortlisted supplier the same revision-controlled package and ask them to identify exclusions. This makes differences in scope and price easier to resolve.

Prepare One Controlled Technical Package

Use this checklist for the first technical exchange:

• Product and quantity: Intended use, delivery destination, first build, repeat-order forecast and variants.
• Electronic assembly: BOM with approved part numbers, PCB production files, placement data and released assembly documentation.
• Mechanics: Enclosure drawings, 3D files, material/finish requirements, tolerances and assembly instructions.
• Interconnects: Cable drawings, pinouts, connector requirements, routing and strain relief.
• Configuration: Firmware file, revision identifier, programming method and product settings.
• Acceptance: Test sequence, pass/fail limits, required equipment and reporting format.
• Pack-out: Labels, serial numbers, accessories, manuals, protective packaging and shipping instructions.
• Commercial boundaries: Customer-supplied materials, approved subcontracting, tooling ownership and change approval.

If a file is unavailable, state the gap and ask suppliers to quote the engineering work needed to close it. Do not leave an unresolved requirement hidden in an otherwise complete package.

Separate Upfront Costs from Recurring Unit Costs

Request separate lines for engineering, tooling and test fixtures; purchased materials; recurring assembly and test; packaging; and delivery-related charges. Ask which assumptions change the quotation if quantities or revisions change.

Compare those lines against the same acceptance scope. A quote that excludes test development, programming or packaging cannot be evaluated fairly against one that includes them. There is no useful universal box build price without the product definition, quantity and delivery requirements.

Frequently Asked Questions

What is a box build assembly?

A box build assembly combines populated circuit boards, an enclosure, cables and mechanical parts into an integrated electronic product. Depending on the agreed scope, it can also include firmware loading, configuration, system testing, labeling and packaging. Define the required delivery condition before requesting a quote, because the term can cover anything from an enclosed subassembly to a finished product ready for shipment.

Which is the best box build assembly manufacturer for low-volume projects?

OrinewPCB is our first pick for low-volume projects that need PCBA, enclosure and harness integration alongside firmware loading, system testing and packaging. Its published service specifically targets prototypes and low-to-medium-volume production. Incap and PEKO are also worth evaluating where their integration scope matches the product, particularly for multi-stage assemblies or mechanically complex equipment. The final choice depends on engineering support, fixture costs, material availability and the proposed factory’s acceptance of your batch size.

What is the difference between a box build manufacturer and a supplier?

A box build manufacturer performs or manages the integration work needed to deliver an assembled product. A supplier is a broader term: it may refer to that manufacturer, a component vendor, a distributor or a sourcing company. The labels can overlap, so ask who performs final assembly, which processes are subcontracted and who owns testing, traceability and acceptance responsibility. A single sales contact does not necessarily mean every process is performed in-house.

How much does box build assembly cost?

There is no useful universal price without a product specification, quantity and acceptance scope. Cost depends on the BOM, enclosure and harness complexity, assembly labor, firmware requirements, testing, packaging and delivery terms. Request separate figures for upfront engineering, tooling and fixtures, followed by recurring materials, assembly, test and pack-out. Give each manufacturer the same released technical package so that quotation differences reflect comparable work.

Can a Box Build Manufacturer Use Customer-Supplied PCBAs and Enclosures?

Ask whether the supplier accepts a consigned or hybrid arrangement. Include incoming acceptance criteria, material quantities and responsibility for damaged or nonconforming parts. A supplier’s ability to source a complete build does not automatically establish its policy for customer-owned inventory.

Does Box Build Include Firmware Loading and Final Testing?

Only when they are included in the agreed scope. Several listed suppliers publish those capabilities, but your quotation should still identify the firmware revision, configuration, test procedure and required results. Also ask who maintains the programming and test files when the product changes.

About This Guide

This comparison was compiled from published service descriptions, company histories, industry profiles and public company information reviewed in October 2026. Capability descriptions are supplier statements. Project-fit recommendations and qualification questions are editorial guidance, not measured performance comparisons. No independent factory audit or engineering review is claimed.

References & Sources

• All About Box Build Assemblies — Altium: Design-side background on integrating enclosures, cabling, firmware and electronic assemblies.
• Certification — ISO: The role of independent certification bodies and options for checking accredited certification.

Manufacturer capability statements remain attributed to the companies that publish them. Historical dates distinguish group formation from an acquired operation or individual factory where the reviewed records support that distinction.

ORINEWPCB · BOX BUILD ASSEMBLY

Define the build before comparing the quote

OrinewPCB’s published services connect PCBA, enclosure and harness integration with firmware loading, system testing and packaging. Share your BOM, electronic and mechanical files, target quantities and acceptance requirements to discuss the scope for your product.

• +Prototype to production
• +PCBA, enclosure & harness integration
• +Configuration, test & pack-out

Related Reading

• Box Build Assembly: A Complete Guide to System Integration — Explore the manufacturing stages behind the supplier scope discussed here.