... designed torque distribution system, high-precision grinding of hardened gear teeth, imported high quality key bearings, and the interlocking ... ’s products.Metering feeders are equipped with single screw, twin screws ( both intermeshing and non-intermeshing), or spring( ... single screw extruder,double screw extruder,two screw extruder,twin screw extruder,plastic machine,pelletizer,plastic extruder If any ...