1,Tungsten Carbide drawing dies 2,100% virgin powder. 3,can drawing copper, iron, steel , 4,blanks and finished Zhuzhou ZZ Hardmetal R&D Center was established in the hometown of hard metal of China --- Zhuzhou city in Hunan province.We are a professional Chinese manufacturer of tungsten carbide products. We work with eight cemented carbide factories by joint stock method. Each factory has their ...