Characteristics: 1Barrl and screw material: 38 chrome-molybdenum aluminum , nitrogen treated 2FIXED DIE HEAD DEVICE 3Gear box: water cooling reducer, hard tooth surface 4Single winder 5counter of metric 6Main motor : CHINESE BRAND ，WITH CHINESE INVERTER 7Heating ring : cast aluminum 8Air compressor http://www.sanbimachine.com/