With over 20 years of solid experience for extrusion process technology, Hongwan’s experienced blown film specialists will help you implement the right system for virtually any blown film application. -3 up to 9 layers co-extrusion blown film line We have technology of an auto-profile control system , Auto-profile air ring for film, IBC control system, automatic winder w/PLC touch screen operation, and dosing system.Thickness Tolernces ±3% with APC, and output is more than 650kg/h -5 up tp 9 layers co-extrusion downward blown film machines, Thickness Tolernces ±3% with APC, and output is more than 500kg/h.