Is there any third party doing mild steel coil quality test?

As the brand awareness increasing, Shanghai ChangZeng Metal Co., Ltd. has worked with a trustworthy third party to conduct the quality test. In order to guarantee the quality of mild steel coil , our reliable third party will perform the quality test based on the tenet of fairness and justice. A third-party certification plays an important role in giving us clear quality situation about our product, which will encourage us to do better in the upcoming future.

ChangZengis recognized as a leading professional steel coil manufacturer in China. ChangZeng's main products include steel sheet series. Customized steel products is offered by ChangZeng. It comes with installation instructions and videos. our teamoffers factory price with best quality products. It is the best for welding, machining or other needs.

We are committed to sustainable development. In addition to the good feelings we gain, our sales have actually increased through our good works. This unexpected benefit comes because people were impressed with our job and wanted to work with a company with such responsibility.