This type of machine is developed on the base in absobing advanced technology abroad.It use three feed-in screws to work together, and extrude different or same kind of material.It produce plastic bottle with characters of antisepsis, anti-leak and beautful figure, high intensity. This type of machine is for suitable for plastic pellet extrusion suchas high-pressure polythene,low-pressure polyvinyl propylene,ect, It is adopted auto-control temperature and FM actiyator. And it adjust precisely thick-ness of each layer of the bottle. This company provides the technical for mula.