... compound 3High efficiency& low noise TSEY Series Counter-rotating Twin Screw Extruder suitable to speicial material ,like plastic wood. 1. ... , air-cooling pelletizing, water-ring pelletizing.4. Screw elements and kneading blocks are made of high tool ... different materials.6.Metering feeders are equipped with single screw, twin screw, hollow screw, forced-feeding, side-feeding, liquid-adding system ...