... box, low noise, "jingcheng" DM series of plastic film blow molding unit, by the extruder, single-layer blow die, cooling wind ring, traction ... , but also produces HDPE, LLDPE film. The family unit has the following structure, complementary features: 1, screw extruder, spiral tube-based company2 ... domestic electrical appliances are well-known brands Jingcheng high speed plastic film blowing machine