Quality assurance at Haosheng Fasteners begins long before the final product is packed. The company follows a full-spectrum quality control protocol that spans from raw material inspection to final packaging.
Mechanical tests include tensile strength, hardness, and impact resistance, while dimensional checks ensure thread fit, pitch accuracy, and surface flatness. Corrosion resistance is tested through salt spray and coating thickness analysis. Every batch is traceable with documented results.
Third-party inspections and factory certificates (including material and performance reports) are available upon request, providing transparency and peace of mind for international clients.
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