Quality Control On PCB & PCBA
MOKOPCB’ quality-controlled ecosystem improves quality outcomes for fast-moving NPI teams to unblock innovation
Quality Control: The Foundation of Everything We Do
At MOKOPCB, quality isn’t just a department—it’s our fundamental commitment to you. We’ve established rigorous quality control procedures at every stage of production to ensure each PCB and assembly meets the highest industry standards and your exact specifications.

Our PCB Design & Layout Services
01
Quality Planning
APQP
MSA
SPC
PPAP
FMEA
ERP+MES integration
02
Supplier Quality Management
Supplier qualification process
AVL management
Component verification
Supplier evaluation
Supplier Guidance
Continuous improvement
03
Process Control
Automated inspection systems
Critical Process Control
CPK analysis
Critical point control
Defect isolation
04
Quality Inspection
IQC
First article inspection
IPQC
FQC
OOBA
AOI
X-RAY
05
Quality Improvement
RMA analysis
CAR
8D methodology
Quality history tracking
Know how
Daily quality monitoring
System audits
Why choose MOKOPCB

Industry-Certified Standards
Our manufacturing adheres to IPC-A-600 Class 2 & 3, IPC-A-610, and ISO 9001 standards, ensuring every PCB meets or exceeds international quality benchmarks.

State-of-the-Art Inspection
Our investment in advanced AOI, X-ray, and flying probe technology allows us to detect and prevent defects that conventional inspection might miss.

Expert Quality Team
With specialists averaging 10+ years in PCB quality control, our team provides technical insight at every production stage to address potential issues before they occur.

Complete Transparency
Our detailed documentation and quality reporting system gives you full visibility into your product's manufacturing journey, from material selection to final testing.
Quality Control Process
Every raw material batch is rigorously tested before entering production, verifying specifications including laminate thickness, copper weight, and material composition to ensure perfect starting conditions.
Our engineers carefully review Gerber files and manufacturing requirements, performing DFM analysis to identify and address potential issues before manufacturing begins.
During manufacturing, we conduct automated optical inspections at critical stages, maintaining continuous monitoring of etching quality, drill precision, and layer alignment.
Completed boards undergo comprehensive testing including dimensional verification, electrical continuity testing, impedance testing, and full visual inspection to capture any potential defects.
All incoming components are verified against specifications and inspected for authenticity, ensuring only genuine parts matching your BOM are used in assembly.
Our SMT process features automated paste inspection, precise component placement verification, and reflow profiling to ensure perfect solder joints and component alignment.
After assembly, each board undergoes AOI and X-ray inspection to verify solder joint quality, component placement, and identify any hidden defects beneath components.
Custom functional testing verifies that each assembled board operates according to design specifications, ensuring real-world performance matches intended functionality.
Advanced Production &Testing Equipment
At pcbunitedstates, we operate with state-of-the-art technology to ensure that the quality we offer is exceptional. High-quality equipment means accuracy, speed, and dependability at various stages of manufacturing and testing.





Quality Documentation
We provide comprehensive quality reports tailored to your requirements
- Maximum Layer Count
- Dimensional measurement data
- Material conformance certificates
- Electrical test results
- X-ray inspection analysis
- Component placement verification
- Solder joint quality assessment
- Functional test documentation
Quality Certifications
Our commitment to exceptional quality is validated through industry-recognized certifications. These certifications demonstrate our adherence to international standards and our dedication to maintaining the highest level of quality in all our operations.







Resolving Quality Issues
MOKOPCB backs every product with our comprehensive quality guarantee. If your order does not meet specifications, we offer a straightforward rework or refund policy designed to ensure your complete satisfaction.
- Processing defects
- Tolerance requirement failures
- Incorrect material or finish
- Non-machinable parts
- Unavailable products
- Other PCB issues
Contact MOKOPCB today for PCB & PCBA Products with Superior Quality Control