... , M7, M35, M42, M2Al, W9, W18. Main Tool steel products: D2,H21,H13,H3,H4,H5,C1,LD ... high speed steel producer and leader of the Chinese Special Steel Association, with Sumitomo corperation as our second ... shareholder. Main products: High speed tool steel, PM high speed steel, high alloy tool steel, and other alloy steel. ... , M7, M35, M42, M2Al, W9, W18. Main Tool steel products: D2,H21,H13,H3,H4,H5,C1,LD ...