Tool Steel, Precision Mould, Mold Making manufacturer / supplier in China, offering 1.2316/422/3Cr17NiMo Plastic Mold Steel, 1.2316 422 SUS420J2 3Cr17NiMo Tool Steel Stainless Steel Die Steel, 1.2316/422/3Cr17NiMo Special Alloy Mold Die Tool Steel Stainless Steel and so on.