... 3-Layer Co-extrusion Polyolefin Hot-shirnk Production LineUse:Thermal shrinkage film for packing ( applying to box-packing products, ... polyester film BOPET, thermal seal film, protective film, thermal shrinkageFilm and annealed soft film, single layer, thermal shrinkage film and etc ... , double axial film, double-bubble squeezing productive line, infrared heating, motor control system and etc. Parts.2. ...