——Jianhu County Hongda Valve & Pipe Fittings Co., Ltd. was founded in 1998, and its headquarter and factory are located in Jianhu County, Jiangsu Province, an important production base of China's petroleum equipment industry. After more than 20 years of development and growth, At present, the company has become a professional manufacturer of petroleum machinery and construction machinery. It is a member of the first-class supply network of PetroChina, Sinopec and CNOOC Materials and Equipment Corporation. The company has been recognized as a national high-tech enterprise, and the "Luan" brand trademark has been recognized as a well-known trademark in China. The company is a national specialized and innovative little giant enterprise, an outstanding private enterprise in Jiangsu Province, and an AAA quality credit enterprise in Jiangsu Province, and won the "Mayor Quality Award". Wu Qichun, Chairman of the Board of Directors, is a representative of the 12th and 13th National People's Congress of Jiangsu Province, a provincial model worker, a provincial outstanding young entrepreneur and a leading entrepreneurial talent in northern Jiangsu. The main products include casing head, wellhead equipment and oil (gas) tree, throttling and killing manifold, various high-pressure valves, fracturing and gas testing integrated services, etc.