... mold making; 3.Dust-free injection and assembly workshop. medical plastic Screw Cap:1. Customize medical Screw Cap,centrifuge tube,conical tubes,vials ... .Mould material:718,2738,S136, SKD61,H13,SKD11,etc.Advanced equipments:precision grinder,milling machine,driller,wire cutting machine,EDM,CNC ... ,please feel free to contact us. Plastic Screw Cap for medical tube and medical bottle