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Tungsten Coating Hvof Screw and Barrel for 65% Glass Fiber Filling Highly Abbrasive Plastics Processing, Find Details and Price about Screw Barrel Screw and Barrel from Tungsten Coating Hvof Screw and Barrel for 65% Glass Fiber Filling Highly Abbrasive Plastics Processing - Ningbo Jinyi Precision Machinery Co., Ltd.