... or E-mail me 3D drawing.In one word, Shanghai Mingrui Mould Co.,Ltd is specialized in plastic injection mould, Customer’s special requirement is ... your reference.Item:DescriptionName:Plastic injection mouldCore steel:S45C, S50C, P20, 2738, S55C, 718H, S136, 2316, NAK80, etc.Cavity steel:S45C, S50C, P20 ...