Zhoushan Qunying Plastic Machinery Manufactory is founded in 2003 and located in the Zhoushan City, Zhejiang province, China. We are close to the Ningbo and Shanghai. Rely on the advanced production equipment, the superb techniques and the scientific management concept, the company expands the factory in a large scale and focuses on produce various types of screw barrel such as injection screw barrel, extruder screw barrel, conical twin screw barrel, parallel twin screw barrel and so on. Most product materials are selected from high-quality powder alloy steel and add reasonable process design through tempering, molding, qualitative, nitriding, fine grinding, and the polishing process of refining. So that the screw barrel has super-hard resistance to wear, corrosion resistance, and fracture resistance. In order to meet the needs of our customers, our company also provides product design, measuring, sample processing, and repair manufacturing business. Since the establishment of the company, we are getting greatly appreciated and praised by new and old customers around the world. We insist on the principle of quality, and honesty to customers, provide our new information and products, and offer good quality products with good prices. Utill now, our screw barrels have been exported to more than 30 countries all over the world, like Russia,Austalian,USA,Korea,Singapore,Malaysia,Vietnam,India, Saudi Arabia,UAE,Iran,South Africa,Turkey and so on. We sincerely welcome customers to visit our factory! Your satisfaction is our eternal pursuit and goal.