1.Shenhua Ningxia Coal Industry Group: In addition to its main business of coal and coal chemical industry, its polypropylene production capacity is also considerable. The company’s coal chemical projects produce a large amount of polypropylene products every year, which have a certain share in the market2.

2.Jinneng Science & Technology Co., Ltd.: This is a comprehensive chemical enterprise. Its polypropylene production projects adopt advanced process technologies, and the produced polypropylene has high quality and stable performance, which is widely recognized by the market2.

3.Donghua Energy Co., Ltd.: It has several production bases and has developed a variety of polypropylene product grades, covering most of the mainstream product requirements in the market, and has strong competitiveness in the field of polypropylene2.

4.Dongguan Juzhengyuan Technology Co., Ltd.: The company’s “1.2 million tons/year propane dehydrogenation to high-performance polypropylene project” has a large production capacity and can produce high-quality polypropylene products, making important contributions to the local and surrounding polypropylene markets2.

5.Ningxia Baofeng Energy Group Co., Ltd.: Located in the core area of Ningdong Energy and Chemical Base, it has formed a complete industrial chain of coal chemical industry. Its polypropylene production capacity is constantly expanding, and the product quality is reliable, which is widely used in various fields2.

6.Shaanxi Yanchang Zhongmei Yulin Energy and Chemical Co., Ltd.: It is the largest polyolefin product supplier in Shaanxi Province, and its polypropylene products have a certain influence in the local and surrounding areas2.