... 8 cavity PC jar preform mould. all the other factory only can make 1 or 2 cavity mould. NameDescriptionMould material45#, 50#, P20, ... H13, 718, 2738, NAK80, S136, SKD61 ect.Mould ... of special mold steel after preheating treatment in the original factory in Sweden. Individual tempera-ture control of each cavity ...