Tool Steel, Precision Mould, Mold Making manufacturer / supplier in China, offering Hot Work Steel 1.2343 Flat Steel Round Bar H11 Steel, 42CrMo4 42CrMo 4140 Pre-Harden Alloy Steel Flat Scm440 4140 Steel, Tool Steel 1.2083 Plastic Mold Steel for Injection and Extrusion Mould and so on.