1.Sinopec Shanghai Petrochemical Company Limited: It is one of the major petrochemical enterprises in China with advanced production technology and equipment, producing a variety of polypropylene products with high quality12.

2.Zhenhai Refining & Chemical Company: This company is famous for its large production scale and stable product quality. It plays an important role in the domestic polypropylene market12.

3.CNOOC Energy Development Co., Ltd.: With strong technical strength and rich experience in the petrochemical field, it is committed to the research, development and production of polypropylene products12.

4.Liaoning Petrochemical Company: It has a certain scale of production capacity and a wide range of product grades, which can meet the different needs of customers12.

5.Fujian Refining & Chemical Company: The company’s polypropylene products are widely used in various fields, and it continuously improves product quality and production efficiency through technological innovation12.

6.Zhongjing Petrochemical Co., Ltd.: It is a large private petrochemical enterprise in Fujian Province, mainly producing BOPP, PP, PDH, hydrogen, spandex, degradable plastics and other chemical products. Its polypropylene production capacity is large, and it is one of the important polypropylene manufacturers in China2.

7.Zhejiang Petrochemical Co., Ltd.: As a large-scale petrochemical enterprise, it has advanced production processes and technologies, and its polypropylene products have excellent performance and are widely used in many high-end fields2.