Screw Barrel, Twin Conical Screw and Barrel, Twin Parallel Screw and Barrel manufacturer / supplier in China, offering Planetary Screw and Barrel for Heat-Sensitive Plastic, Core Shafts, Screw Elements and Segmented Barrel for Plastic Pelletizing and Modification, 120mm Bimetallic Injection Molding Machine Screw& Barrel for Recycled PP with 15% Glassfiber and so on.