... 2, OEM orders 3, Quick delivery 4, strict quality control Partname: valve oil seal mould 1. Mould for all kinds of rubber ... has advantaged geographical environment and convenient traffic.We have numerical control lathe, ordinary lathe, milling machine, carved machines and many ... Cr12MOV and heat treatment adopted the integral quenching which can control the mould's hardness within HRC50± 3 degree, it ...