The raw materials of 304 stainless steel mother coils are purchased from well-known manufacturers such as TISCO and POSCO, and every batch of goods is said to be genuine.
Each batch of goods has a product quality certificate issued by the origin manufacturer.
Our company will also conduct full inspections on the raw materials sent to the factory, and select raw materials for sampling and use for spectral testing.
The spectral testing can roughly detect the ingredients contained in the raw materials. We will check with the manufacturer’s quality certificate. Make a comparison and confirm that the materials are correct.
Checking details include products thickness tolerance, width of coil, outside packaging, label marks, inside surface finish, chemical components, etc.
We will also save some raw materials and finished products of precision 304 stainless steel foils, and send them to qualified testing institutions on a regular basis, so that the testing institutions can use professional instruments to test our precision stainless steel foils and raw materials.
For full quality control, ensuring that our products are in compliance in every standard of the national technical specifications.