Quality Control â Precision at Every Stage
From raw material inspection to final shipment audit, we apply 5 rigorous QC stages to every order. Because your brand reputation depends on it.
Our Quality Certifications
| Certification | Description |
|---|---|
| ISO 9001:2015 | Quality Management System â Certified |
| CE Marking | European Conformity â Compliant |
| RoHS | Restriction of Hazardous Substances â Compliant |
| REACH | Registration, Evaluation, Authorisation of Chemicals â Compliant |
ð· [Insert certification certificates â ISO 9001, CE, RoHS]
5-Stage Quality Control Process
Stage 1 â Incoming Material Inspection (IQC)
Every batch of raw material is inspected before entering production.
| Inspection Item | Standard | Tool |
|---|---|---|
| Chemical Composition | AISI 316L spec (±0.5%) | Spectrometer |
| Surface Condition | No scratches, pits, or oxidation | Visual + Microscope |
| Dimensional Tolerance | Raw bar/block within ±0.1mm | Caliper / Micrometer |
| Hardness | HRB 75-90 (316L annealed) | Hardness Tester |
ð· [Insert spectrometer inspection photo]
Stage 2 â In-Process Inspection (IPQC)
Real-time monitoring during CNC machining and finishing.
| Inspection Item | Standard | Frequency |
|---|---|---|
| Dimensional Accuracy | ±0.02mm (critical features) | Every 50 pcs |
| Surface Roughness | Ra ⤠0.4μm (polished) | Every 100 pcs |
| Thread Fit | Go/No-Go gauge pass | 100% inspection |
| CNC Tool Wear | Tool life counter + visual check | Per shift |
ð· [Insert CNC QC inspection photo]
Stage 3 â Surface Finish Inspection
Post-polishing and coating quality check.
| Inspection Item | Standard | Method |
|---|---|---|
| Visual Finish | No visible scratches, hairlines, or pits | 600 lux lighting, 30cm distance |
| PVD Coating Adhesion | No peeling after tape test | ASTM D3359 |
| Color Consistency | ÎE ⤠1.0 (within batch) | Spectrophotometer |
| Plating Thickness | IPG: 0.3-0.5μm / PVD: 1.0-2.0μm | X-Ray Fluorescence |
ð· [Insert surface inspection/colorimeter photo]
Stage 4 â Functional Testing
Performance and reliability testing.
| Inspection Item | Standard | Equipment |
|---|---|---|
| Water Resistance | 30m / 50m / 100m / 200m (per spec) | Pressure Tester |
| Crown Operation | Smooth rotation, no binding | Manual + Torque Tester |
| Caseback Seal | No leakage at rated pressure | Vacuum Leak Tester |
| Strap/Bracelet | Pull force ⥠50N | Tensile Tester |
ð· [Insert pressure tester/tensile test photo]
Stage 5 â Final Outgoing Inspection (OQC)
Pre-shipment audit based on AQL sampling standards.
| Inspection Item | Standard | Sampling Plan |
|---|---|---|
| Full Visual Inspection | Zero critical defects | AQL 0.65 Level II |
| Dimensional Spot Check | ±0.02mm | AQL 1.0 Level II |
| Packaging Inspection | Correct labeling, no damage | AQL 1.5 Level S-2 |
| Accessory Completeness | Per BOM checklist | 100% |
Acceptance Criteria:
– Critical defects: 0 tolerance
– Major defects: AQL 0.65
– Minor defects: AQL 1.0
ð· [Insert final inspection/packaging photo]
Testing Equipment
| Equipment | Purpose |
|---|---|
| Spectrometer | Material chemical composition analysis |
| CMM (Coordinate Measuring Machine) | 3D precision dimensional measurement |
| Water Pressure Tester (0-20 bar) | Water resistance rating test |
| Surface Roughness Tester | Surface finish measurement |
| Spectrophotometer | Color consistency measurement |
| X-Ray Fluorescence (XRF) | Coating thickness analysis |
| Tensile Testing Machine | Pull force / strength test |
| Salt Spray Tester | Corrosion resistance test |
| Vacuum Leak Tester | Seal integrity test |
ð· [Insert testing equipment gallery]
Quality Policy
Our Commitment:
- Zero Critical Defects â 100% inspection on safety and functional critical items
- Continuous Improvement â Monthly QC data review and process optimization
- Full Traceability â Every batch traceable to raw material lot and production date
- Customer Transparency â QC reports available upon request for every order
- Third-Party Audit Ready â Facility ready for customer or third-party QC audit at any time
Want to See Our QC Reports?
We’re happy to share sample QC documentation and discuss your specific quality requirements.
[REQUEST QC SAMPLES]