Zhenyuan Plastic Machinery Co., ltd. In Zhoushan, Zhejiang is one of the major professional manufacturers of plastic injection molding machine, extruder, rubber, plastic machine, barrel and screw. The company is located in Zhoushan dinghai district jintang shantan second industrial zone. It covers an area of 450000 square meters, more than 300 staff which includes all kinds of technical personnel. We can produce specialized special screw and cylinder according to user’s different characteristics of engineering plastics. According to the geometrical size and weight of the user's products, we can choose the best machining performance to increase or decrease the screw barrel. There are professional technicians to provide door-to-door surveying and mapping services. The company has first-class professional processing equipment, advanced production technology, high standard plant, advanced computer control heat treatment workshop, multi-function constant temperature quenching furnace, electroplating workshop and international advanced high temperature bimetal cylinder special casting workshop. The company has a large bimetallic high temperature casting furnace, which can produce China's largest and longest double-metal cylinder and screw rod. In constant efforts of all staff, the company has been the rated as "quality credit shuangyou enterprise", "national machinery industry quality assured enterprise", "qualified product of national standard" by province of plastic machinery industry.