... , low noise, "jingcheng" DM series of plastic film blow molding unit, by the extruder, single-layer blow die, cooling wind ring, ... produces HDPE, LLDPE film. The family unit has the following structure, complementary features: 1, screw extruder, spiral tube-based company2 ... supporting the domestic electrical appliances are well-known brand. plastic blowing machinery(Agricultural Film Blowing Machine)