... products: M2, M7, M35, M42, M2Al, W9, W18. Main Tool steel products: D2,H21,H13,H3,H4,H5,C1,LD ... second shareholder. Main products: High speed tool steel, PM high speed steel, high alloy tool steel, and other alloy steel. Main ... products: M2, M7, M35, M42, M2Al, W9, W18. Main Tool steel products: D2,H21,H13,H3,H4,H5,C1,LD ... -5-3SKH53EM3:2S607HYW7V3(W7Mo4Cr4V3) HYV4(W12MoCr4V4) EV4 High Speed Tool steel