... ,H5,C1,LD,C3,440C We are China's largest high speed steel producer and leader of the Chinese Special Steel Association ... Sumitomo corperation as our second shareholder. Main products: High speed tool steel, PM high speed steel, high alloy tool steel, and other alloy steel. Main ... ,H21,H13,H3,H4,H5,C1,LD,C3,440COutput of High Speed Steel in 2008: 15, 000tons. Certificate: ISO9001: 2000 We are ...