Common tests include:

Material chemical composition, tensile/compression strength, surface hardness

Galvanizing, power coating thickness. Or Salt spray test for corrosion

Dye penetrate or ultrasound test for welding quality.

We also regularly use authoritative, 3rd-party labs for testing.

 Quality Goal:

For new product or parts, one-time pass rate should be 90% at least.

For mature products, yield rate should be greater than 98%. Zero defective product should leave the factory.

Timely delivery of products should be 95%.

Stick to continuous improvement for satisfaction of customers should be 95% at least.

We have passed ISO 9000 certifications. Certificate is available upon requests.

We also welcome customers to come and audit our productions and give suggestions for improvements.