PCB manufacturing & assembly
PCB Assembly.
From prototype to production.
Component sourcing, PCB fabrication, SMT, through-hole assembly and testing—managed by one engineering team across China and Thailand.
PCB Assembly.
Integrated services
Bring the build into one coordinated project scope
From bare PCB fabrication and component sourcing to assembly, inspection and box build—managed by one accountable team.
Original concept illustration · not a factory or customer project photograph
01 / PCB
PCB Manufacturing
Prototype and production boards matched to your stack-up, material and reliability requirements.
Explore manufacturing02 / PCBA
PCB Assembly
SMT, through-hole and mixed-technology assembly backed by documented process controls.
Explore assembly
03 / SUPPLY
Component Sourcing
Supplier evaluation, BOM support and practical alternatives for hard-to-source parts.
Explore sourcing
04 / DFM
DFMA & Testing
Design feedback and inspection planning that surface risks before they reach production.
Explore DFMAAgree the scope before releasing the build
A coordinated project needs a visible responsibility split. Use these questions to prepare a comparable quotation, then confirm the proposed facility and acceptance route.
Board data
Released revision, quantity and panel requirements
Agree before release
Customer approves design; manufacturing confirms process fit
Components
BOM, supply model and permitted alternatives
Agree before release
Agree purchasing, approval and shortage ownership
Acceptance
Test coverage, firmware and delivery records
Agree before release
Agree limits and release evidence before production
Connected production
One project. A clear manufacturing handoff.
Manufacturing network
Jiangmen, China
Engineering, sourcing and PCBA production coordination.
Explore the factory →
Manufacturing network
Rayong, Thailand
Regional production and delivery planning.
Explore the factory →Files to release
SMT, inspection and final assembly connected through the agreed production plan.
- 01Released files
- 02Material handoff
- 03Assembly & inspection
- 04Agreed release
Built for dependable delivery
A manufacturing partner your engineering team can work with
KeepBest combines experienced people, precise equipment and connected production systems to support high-mix, small and medium-volume PCBA programs.
✓
Engineering-led project review
Files and requirements are checked before production planning begins.
✓
China and Thailand capacity
Two manufacturing locations support sourcing flexibility and regional delivery needs.
✓
Transparent quality checkpoints
AOI, X-ray, SPI and functional inspection options align with product risk.
Quality without vague promises
Controls buyers can understand
Agree material, process, inspection and release controls for the product risk and customer requirements. Request current quality documents for the proposed facility.
DFMA review, BOM verification and process planning.
SPI, first-article checks and AOI coverage.
X-ray inspection for BGA and other critical packages.
Final inspection, test records and controlled packing.
ISO 9001ISO 13485ISO 14001UL E352816
Displayed document references: request current files and applicable entity, site and scope. UL is printed wiring component recognition, not finished-product approval.
Production capability
Precision equipment for critical checkpoints
3D SPI
Checks solder paste volume, height and position before placement.
Automated Optical Inspection
Identifies component and soldering anomalies through repeatable optical checks.
X-ray Inspection
Provides visibility into concealed solder joints and complex assemblies.
Yamaha SMT Placement
High-speed, repeatable component placement for mixed-volume production.
Nitrogen Reflow
Controlled ten-zone thermal profiles support stable lead-free soldering.
Automatic PCB Cleaning
Removes process residues where cleanliness requirements call for it.
Applications
Built for products where reliability matters
Automotive Electronics
Non-safety-critical cabin, lighting and accessory electronics.
Concept illustration
Medical Electronics
Define medical-device manufacturing and acceptance requirements.
Concept illustration
Industrial Control
Robust assemblies for demanding environments.
Concept illustration
Smart Home & IoT
Connected devices from pilot runs to scale.
Concept illustrationHow it works
From design files to delivered assemblies
A clear path from file review and quotation through controlled production, inspection and delivery.
Engineering-led productionYour files move through one connected review, build and inspection process.
Send files
Share Gerber, BOM, quantity and delivery requirements.
Engineering review
We check manufacturability, sourcing and test requirements.
Quote & plan
Receive a project-specific quotation and production plan.
Build & inspect
Boards are assembled through controlled production checkpoints.
Test & deliver
Final verification, documentation and protected shipment.
Engineering insights
Practical guidance for better PCB assembly decisions
Original concept illustration · not a factory or customer project photograph
Design for manufacturing
DFM Analysis for PCB Assembly: 7 Design Rules to Cut Cost and Defects
Practical DFM guidance to improve yield, reliability and cost before fabrication begins.
Read article
Supply chain
Supply Chain and Component Sourcing for PCB Assembly
How to build a more resilient, traceable and cost-effective component supply chain.
Read articleAssembly process
Selective Soldering vs Wave Soldering
Key differences, application scenarios and how to choose the right process for your product.
Read articleFAQ
Questions buyers ask before requesting a quote
Straight answers about project files, order volumes, component sourcing, inspection and quotation timing.
What files do you need for a PCB assembly quote?
Gerber files, a BOM, target quantity and any assembly or test requirements provide the best starting point.
Do you support prototype and low-volume PCB assembly?
Yes. KeepBest focuses on high-mix, small and medium-volume programs and can support prototype builds.
Can you source components?
Yes. Component sourcing can be included as part of turnkey assembly, with BOM review and supplier evaluation.
Which inspection methods are available?
Available controls include SPI, AOI, X-ray and project-specific functional testing.
How quickly will I receive a quotation?
The team first reviews the scope and available files, then identifies missing inputs or the next quotation step. See Required Files for preparation guidance.
Start a project conversation
Tell our engineering team what you need
Share the essentials now. We will review your requirements and follow up with the right technical questions, lead-time options and quotation path.
Engineering review against your released files
Prototype, low-volume and production programs
Discuss an NDA before sharing confidential design files
Prefer email?sales@keepbestpcba.com
Request an engineering review
Fields marked with * are required.
Background reading: medical PCBA and quality-system considerations