... Information,Environmentally Friendly type co-extruded Polyolefin Shrink Film is now the most widely used shrink packaging ... materials,The main composities of the film are Polypropylene (PP) and Linear Low Density Polyethylene ... (LLDPE).Included Signal-Wound film,Central-Folded film,Tubular film,with or without perforation.Product Features ,1). ...