At present, the top ten domestically recognized first-line valve brands are: Suzhou Neway Valve, Shanghai Qizhong Valve, Shanghai Guanlong Valve, Sanhua, Chaoda, Shentong, Su Valve, Nanfang, Jiangyi, Yao character. These are also manufacturers with stable quality that are relatively recognized in China. In general, choosing a valve manufacturer requires comprehensive consideration based on actual needs, and choosing a manufacturer with a high technical level and good reputation to cooperate with. Suzhou Neway Valve, Shanghai Qizhong Valve, and Shanghai Guanlong Valve are the three main manufacturers recommended for the current project.