1,u-steel frame 2 stable transmission 3 large torque 4 rather durable 5 broad regulation range SJ-A High and low-density blowing film machineSuitable Material: HDPE, LDPE, LLDPE the machine body is U-Steel frame. and the main machine is collocated with low-center gear box, with advantages of stable transmission, large torque, and convenient repair.the machine cylinder and screw adopt 38 crmoala ...