... products: High speed tool steel, PM high speed steel, high alloy tool steel, and other alloy steel. Main High speed steel products: M2, M7, ... ,H3,H4,H5,C1,LD,C3,440COutput of High Speed Steel in 2008: 15, 000tons. Certificate: ISO9001: 2000 We ... all over the word in High speed tool steel industry.Tool steel product list:typesHeye gradeContrast gradeGB1299AISIDINJISBOHLEROther contrast gradeCold-work ...