Quality Assurance & Certifications
At Kaiyu Belt Company, we believe that quality is the foundation of long-term cooperation. As a professional leather belt manufacturer, we implement strict quality control procedures at every stage of production—from raw material sourcing to final packaging—to ensure our clients receive reliable, durable, and market-ready products.
🔍 Our Quality Control System
Our in-house QC system covers the entire production cycle with multiple checkpoints and detailed inspection criteria:
1. Raw Material Inspection
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Leather thickness, grain, and color consistency
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Buckle plating quality (anti-rust & anti-oxidation)
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Accessories like loops, thread, adhesives checked for compliance
2. In-Process Quality Control
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Cutting precision (tolerance control)
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Stitching consistency and strength test
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Logo clarity (embossing or stamping)
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Edge finishing uniformity (painting or folding)
3. Final Product Inspection
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Functional check (buckle and holes alignment)
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Surface defect screening (scratches, stains)
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Odor test (especially for PU and glue-based belts)
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Size & weight confirmation
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Packaging inspection (label accuracy, barcode, customer branding)
We support customer-appointed third-party inspection services like SGS, BV, or Intertek.
✅ Testing Capabilities
We regularly conduct testing for durability, safety, and functionality:
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Tensile strength testing for belt body and stitching
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Salt spray test for metal buckle corrosion resistance
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Colorfastness test for dyed leather under friction or moisture
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Buckle opening/closing cycle (mechanical endurance)
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Nickel release test (for EU market compliance)
Test reports can be provided for bulk orders or upon request during development.
🌍 International Certifications
Depending on your target market, we ensure compliance with the following international standards and can provide documentation:
| Certification | Description |
|---|---|
| ISO 9001 | Quality Management System (Internal QC operations) |
| BSCI / Sedex | Ethical factory audits for social responsibility |
| REACH | EU regulation for chemical safety, especially for PU belts |
| RoHS | Restriction of hazardous substances (for metal components) |
| Prop 65 (California) | Compliance for leather/metal in U.S. market |
| OEKO-TEX (for linings or synthetic belts) | Optional for fabric-based belts |
Note: Certification availability may vary by belt model or material.
🧩 Tailored Quality Levels for Different Markets
We understand that different regions and price levels require different quality standards:
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Luxury private labels – full-grain leather, stitched by experienced craftsmen, high-end buckles
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Retail mass market – top-grain/genuine leather, consistent mid-range quality
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Promotional / low-cost projects – PU leather, simplified construction
Let us know your market and we’ll match the suitable material, testing, and packaging solutions.
🤝 Long-Term Trust, One Belt at a Time
We are committed to zero-defect production goals, fast response for replacements, and continuous quality improvement through customer feedback. Our goal is not only to deliver products—but to protect your brand reputation in your market.