ZHANGQIU GUDAO STEEL BALL CO., LTD
QC
Our products are sourced from domestic and medium-sized raw steel, the material is stable and reliable, from the source to ensure the quality of the product, process ball through strict process control, to ensure that products meet customer requirements; the company has a chemical laboratory, for each batch of products are strictly tested, failure is not storage, to ensure that before the product reached 100 percent pass rate.