... products assembly 11.All above process are make in our factory.we provide you one-stop service! ... mold manufacture process5)what steel material for you choose in plastic mould?NAK80,S136,S718,P20, H13H etc6 ... ,at least up to 400000units;Mould manufacture ,injection in our factory,mould with long-term free warranty.8 ... after your visit! Precision mould factory ,Make in China,Hard Plastic injection Mould