Core service
PCB Assembly Service
One-stop PCBA support for SMT, through-hole, mixed technology, inspection, testing and production release.
Explore PCB assembly →PCB manufacturing & assembly services
One partner for the complete PCBA build.
From design review and PCB fabrication to component sourcing, SMT, THT, testing and final box build—KeepBest connects the work under one project team.
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Expedited PCB support24-hour service may be available for qualifying projects
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Prototype to mass productionAssembly support from 1 piece through volume builds
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Flexible sourcing modelsTurnkey, partial turnkey or kitted/consigned
What we offer
Six services. One coordinated manufacturing path.
Each capability can be used independently or connected into a full turnkey program. Select the service page for deeper technical, commercial and file requirements.
Engineering
PCB Design Service
Layout and design support aligned with manufacturing, assembly and application requirements.
Explore design services →Manufacturability
PCB DFMA Service
Structured review of fabrication and assembly risks before production release.
Explore DFMA →Fabrication
PCB Manufacturing
Rigid, flex and rigid-flex board fabrication coordinated with the assembly build.
Explore PCB manufacturing →Supply chain
Components Purchasing
BOM sourcing, approved alternatives and controlled material handoff.
Explore component sourcing →Quality assurance
Assembly Test
Inspection and project-specific testing aligned with acceptance requirements.
Explore assembly test →Choose the sourcing model
Keep control where you need it.
Use one complete turnkey workflow or divide material responsibility around your approved suppliers, inventory and purchasing strategy.
Selected cooperation model
Full turnkey PCB assembly
KeepBest manages PCB fabrication, component sourcing, assembly, inspection and the agreed delivery scope under one coordinated program.
Single project ownerSupplier coordinationMaterial + production
Assembly formats
Support beyond one board type.
The build route can cover standard rigid PCBAs, flex and rigid-flex assemblies, cable work and final system integration.
Rigid & rigid-flex PCBA
SMT and THT assembly for standard and complex boards, including BGA, micro-BGA and QFN packages.
PCB assembly details →Flexible PCB assembly
Assembly routing adapted to the handling, support and process needs of flexible circuits.
Flexible PCB guide →Cable assembly
Cable and wire-harness work can be integrated with the electronics and final build scope.
Discuss cable requirements →Case / box assembly
PCBA, enclosure, wiring, mechanical parts and functional checks assembled into a finished system.
Explore box build →PCB assembly capabilities
Technical boundaries buyers can review early.
Use these values as a planning reference. Engineering confirms actual feasibility against your board design, materials, production route and inspection needs.
SMT + THT + mixed technology
Production capability is meaningful only when it fits the board.
Share the design files so engineering can confirm package, panel, process and inspection requirements.
Current capability summary
Project-specific feasibility remains subject to engineering review.
Minimum order1 piece
Board typesRigid PCB, flexible PCB and rigid-flex PCB
Assembly typesSMD, through-hole, BGA, micro-BGA, QFN and mixed technology
Board size50 × 50 mm to 510 × 460 mm
Quality referenceIPC-A-610
Minimum package01005 (0.4 × 0.2 mm); minimum BGA diameter 0.14 mm; pitch 0.2 mm
SMT capacity3–4 million soldering pads per day
DIP capacity100,000 pins per day
Turnkey PCB assembly service
Five connected stages from materials to delivery.
Select a stage to see how the original service process connects sourcing, manufacturing, programming, testing and final release.
Selected stage
PCB manufacturing & parts inspection
PCB fabrication begins against the approved data while component sourcing moves in parallel. Incoming material is checked before release to assembly.
- PCB fabrication
- Component sourcing
- Incoming quality control
Facilities showcase
See the equipment behind the service promise.
Browse real production images covering cleaning, printing, SPI, placement, reflow, AOI and X-ray-related inspection stages.
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PCB cleaning
Surface preparation before solder paste printing and component placement.
Service FAQs
Questions before starting a build.
These high-intent answers are retained from the existing Services page and linked to deeper information where helpful.
View all FAQsDo you support low-volume PCB assembly?
Yes. KeepBest supports small- and medium-batch PCBA and prototype-to-production programs. Final schedule and feasibility depend on the design, quantity, materials and test requirements.
What is considered low-volume PCB assembly?
The current service page describes builds below 100 pieces as low volume. The right production route also depends on complexity, component availability and process setup.
What are the advantages of small-batch PCBA?
Small batches can support early validation, faster design learning and lower unusable inventory before volume production.
Can one supplier provide PCB manufacturing and assembly?
Yes. KeepBest can connect PCB fabrication and PCB assembly within one program. Review the combined manufacturing and assembly service.
How long does turnkey PCB assembly take?
Lead time depends on volume, board complexity, component availability, testing and the required delivery method. The project quotation should confirm the achievable schedule.
Engineering reading
Explore the details behind your build.
Continue with our existing technical guides on design, sourcing, assembly and verification.
Browse technical guides (20)
Start with the project files
Upload Gerber and BOM for a coordinated review.
Include quantity, sourcing responsibility, assembly type, testing requirements and target schedule so the team can connect the right services.
Design-to-delivery service planningTurnkey, partial turnkey or consignedChina and Thailand manufacturing support
Request an engineering review
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