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