... co-extrusion machine head, down-blowing water-cooling, film rotation, and other technologies. It takes LDPE,mLLDPE,LLDPE,PP, ... PP,ternary copolymerized PP as material, to produce packaging film and composite packaging material which are with properties of good ... , printed, etc, to provide high-quality cheap plastic packaging film for food, agricultural products, medical, chemical, pesticide, commodity, ...