As a professional injection mold maker in china, we only use steels with good quality like 1.2738,1.2711,1.2343,1.2344,1.2510,1.2767,1.2312, 1.2343 ESR, H13,8407, 420SS, S136, P20, P20H, 718H, NAK80,S-7,etc. They are all from famous suppliers, such as LKM, ASSAB, Groeditz，THYSSEN, etc. Steel certificate and heat-treatment certificate will be provided along with the tools while delivery if required.
