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Zhejiang Guangming Plastic Machinery Co., Ltd. (Guangyou Screw),which was established in 1992, through 20 years of endeavour and cultivation, the company now among the world leading manufacturer of screw and barrel. It is located in the Xihou Industry Park, Jintang, Zhoushan. The company has facilities totalling over 50,000 square metres and employs over 500 workers. we pride ourselves on advanced and numeric controlled manufacturing and fine-processing facilities, including computerized nitriding furnace, quenching furnace for heat treatment, and plasma alloy surfacing equipment that is full automatic and numeric controlled.