... China, have specialized in the field of injection and extruder machine parts.Features of products 1. Highly Standard Modular DesignedThe ... unites to reach extremely low output speeds.3.Mounting ArrangementNo strict limitation to the mounting arrangement.4.High Strength,Compact DimensionHousings are ... Screw Barrel : Series double screw gear box for extruder machine(PVC, PP, PE, PA, PC, ABS .etc)