In November 2015, China Chemical Suppliers Committee initiated the statistical analysis of qualified fastener suppliers on the sourcing service platform in Petroleum and Chemical Industry. Based on the company report and the principle of publicity, justice, and impartiality, 18 fastener suppliers were considered as the first batch of qualified enterprises, including Gem-Year, Ningbo Jinding, Haiyan Yuxing, Ningbo Ningli, Ningbo Zhenhai Huazhi, Shandong Tengda, Zhejiang Tongming, and Shanghai PMC, etc.