The raw materials of our company are from many large steel companies such as Laiwu Steel, Tangshan Steel, Tianjin Yayi etc. depending on excellent quality and stable material, the company carries out strict quality control; meanwhile, by right of advanced testing equipments, the company takes strict physical and chemical test for guaranteeing stability. Meanwhile, the company has large storage for raw material that can store thousands tons of raw material, which guarantees product supply.