... ,H3,H4,H5,C1,LD,C3,440C We are China's largest high speed steel producer and leader of the Chinese Special ... ,H3,H4,H5,C1,LD,C3,440COutput of High Speed Steel in 2008: 15, 000tons. Certificate: ISO9001: 2000 We are looking forward ... HM1HYH45Cr4Mo3SiMnVAl 012AlHYH55Cr4W5MoV RM2Martensite stainless steel9Cr189Cr18 SUS 440C 9Cr18Mo9Cr18Mo440CX102CrMo17SUS 440C Tool steel,tool steel bar,die steel