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Quality Assurance
Quality Assurance in PCB Manufacturing
Every PCB undergoes rigorous testing before leaving our facility to ensure all electrical and circuit performance meets specifications. Our team follows proven quality control protocols, delivering only the highest-grade products to our customers.
Certified Excellence
Backed by globally recognized international certifications, we guarantee your PCBs meet top-tier industry standards.
End-to-End Quality Commitment
Strict material & component inspections
Comprehensive service with zero quality compromises
Free DFM verification included with every order for added precision
We have strict quality control procedures:
1. Order Review
2. Production Documentation Control
3. Incoming Material Control (IQC)
4. Production Process Control
5. Final Inspection (FQC)
6. Pre-Shipment Audit (FQA)
7. Post-Sales Follow-Up
Mature Quality Management System—Ensuring Product Excellence.
To ensure the highest quality in PCB manufacturing and assembly, we have established a comprehensive quality control system covering every stage—from design verification and material management to production, electrical testing, and mechanical inspection.
Our quality management system covers over 20 critical control points across PCB manufacturing and assembly, including engineering review, material inspection, production monitoring, electrical testing, and final inspection.
Our capabilities support a wide range of applications, including aerospace, medical, automotive electronics, and consumer electronics, ensuring every PCB meets the demands of high-reliability industries.Bare PCBs are inspected according to applicable IPC-A-600 and IPC-6012 requirements, while PCB assemblies follow IPC-A-610 acceptance criteria. Class 2 or Class 3 requirements are applied based on customer specifications.
The honor we received
1. Design Verification & Engineering Review (DFM & Engineering Review)
1.1 Free DFM (Design for Manufacturability) Analysis
Before order confirmation, our engineering team provides a complimentary DFM check covering the following aspects: Signal Integrity Analysis (impedance matching, high-speed signal layer optimization) Power/Ground Plane Inspection (preventing voltage drop and EMI issues) Drilling Process Evaluation (via hole copper thickness, hole wall quality, blind/buried via design) Solder Mask Optimization (solder bridge prevention, exposure accuracy) Silkscreen Legibility Verification (component identifiers, polarity marking clarity) If any design risks are identified—such as insufficient minimum trace width/spacing or thermal imbalance—our engineers will provide a detailed optimization report to ensure the design is ready for mass production.1.2 Engineering File Control – Precision Meets Standardization
Smart CAM Processing:
We utilize intelligent CAM systems to seamlessly convert Gerber files, automatically optimizing panel layouts and compensating for etching tolerances—ensuring maximum precision from the start.
Standardized Manufacturing Instructions (MI):
Our experienced process engineers develop detailed MI documents covering lamination settings, drilling accuracy, solder mask workflows, and more.
Every MI undergoes a strict dual-review process—technical review + final QA approval—to ensure 100% alignment with your specifications before production begins.
First Article Inspection (FAI):
No compromises on quality: full-scale production only starts after the first board successfully passes 3D inspection and comprehensive electrical performance testing.
2. Supply Chain & Material Control – Trusted Components, Guaranteed Quality
2.1 Rigorous Supplier Management
We collaborate with globally recognized, top-tier PCB material providers such as Isola, Taiyo, and Shengyi, ensuring that quality begins at the source.
Incoming Quality Control (IQC):
Base Materials:
All laminates undergo detailed inspection—including TG values, dielectric constants, and copper foil thickness—to meet or exceed IPC-4101 standards.
Chemicals:
Strict control of chemical solution concentrations and shelf life ensures process stability and consistency.
Components:
We source exclusively from OEM-authorized distributors, with 100% verification of batch numbers and datasheets to guarantee authenticity, traceability, and full compliance with design requirements.
Certified for Confidence:
Our supply chain and material control processes align with major international standards, including RoHS, REACH, and ISO 9001, giving our customers peace of mind across industries from aerospace to consumer electronics.
2.2 First Article Inspection (FAI) & BOM Validation
Automated FAI System:
Our advanced FAI process begins with a full BOM scan, automatically cross-checking real components by brand, model, and package type to ensure complete accuracy before mass production.
Automated First Article Report:
The system generates a detailed inspection report including X-ray analysis, electrical performance data, and visual verification.
Enhanced Control for High-Risk Components:
Critical parts such as BGAs and QFNs undergo an extra layer of inspection using X-ray + 3D AOI to eliminate hidden defects and ensure assembly precision.
3. In-Process Quality Control – Precision at Every Step
3.1 SMT Assembly Process Control
We utilize fully automated, high-precision pick-and-place machines with ±25μm accuracy, supporting ultra-miniature components down to 01005 size—ensuring precise and reliable assembly.
3D SPI (Solder Paste Inspection):
Real-time inspection of solder paste thickness, volume, and positioning to prevent issues like cold joints or solder bridging before components are placed.
Inline AOI (Automated Optical Inspection):
High-speed AOI systems detect:
Incorrect or misaligned components
Polarity issues
Solder joint defects such as voids, insufficient solder, or misplacement
This multilayered inspection ensures that every board meets our strict quality standards before moving to the next stage.
3.2 Multilayer Lamination & Drilling Control
We ensure mechanical integrity and signal reliability through advanced drilling and lamination technologies.
Laser Drilling for microvias under 100μm, and mechanical drilling with ±50μm precision
Real-time monitoring of lamination parameters: temperature, pressure, and vacuum
Inner-layer AOI to detect opens, shorts, and etching inconsistencies before layer stacking
| Method | Use Case | Precision | Advantages |
| Flying Probe | Small batches, high mix | ±1μm | No fixture required, fast & flexible |
| Fixture Test (ICT/FCT) | Mass production | ±10μm | Supports 1000+ test points simultaneously |
| Impedance Test | High-speed PCBs | ±5% | Ensures signal integrity at high frequencies |
Our Quality Commitment
First-Pass Yield > 99% — outperforming the industry average of 95% Compliance with IPC Class 3, ISO 9001, and IATF 16949:2016 standards 24/7 online access to production status and quality reports Through our end-to-end quality control system — from design to delivery — we ensure full process visibility and traceability, helping our customers:
Reduce quality risks by over 30%
Shorten delivery cycles by up to
4. Final Testing & Reliability Verification
4.1 100% Electrical Testing Coverage
We apply precise, scenario-specific electrical tests to ensure signal integrity and board functionality:
4.2 Mechanical & Environmental Reliability Testing
Dimensional Inspection using 2D measuring systems (±0.02mm precision)
X-ray Analysis for BGA solder joints and blind via fill quality
Thermal Stress Testing including 288°C solder dip and temperature cycling (TCT)
Microsection Analysis for copper plating thickness and resin fill evaluation
5. Data Traceability & Continuous Improvement
MES Traceability System: End-to-end tracking of process parameters and test data for every single PCB
CPK Process Capability Analysis: Key processes maintain CPK ≥ 1.33 to ensure consistency and stability
8D Reports: For any quality anomalies, we provide in-depth root cause analysis and actionable improvement plans
