... Standard Latest Designed 2.High Strength,Compact Dimension 3.Long Service Life 4.Low Noise 5.High efficiency Gearbox ... precision. High intensity of gear transmission, low noise.2, distribution box small helical gear cone Angle, using ... are equipped with cooling device, safety of operation.5, all cutting shape smoothly artistic.Except existing specification, ... twin screw extruder gear box for PVC machine