The company was founded in October 1992. Approved by the China Securities Regulatory Commission, it was listed on the Shenzhen Stock Exchange in May 2017, and production bases are located in the Qingdao High-tech Zone and Laizhou City. The company mainly produces gray cast iron and ductile iron gate valves, butterfly valves, check valves, filters, exhaust valves, bottom valves, globe valves, alarm valves, rain valves, balance valves, eccentric hemispherical valves, flow control valves, backflow preventers, fire hydrants, etc., including more than 150 models and more than 2,000 specifications. The maximum caliber can reach DN2600, and the products are sold to the United States, Europe, Australia, Central and South America, the Middle East, etc. The company is a high-tech enterprise specializing in the design, development, manufacture and sales service of water supply and drainage valves and gas products. It provides products and solutions for downstream applications such as municipal water supply and drainage systems, urban gas network systems, fire water supply systems, air conditioning, heating and ventilation systems, and sewage treatment systems. Main products: gate valves, butterfly valves, globe valves, control valves, plug valves, check valves, pressure relief valves, alarm valves, rain valves, fire hydrants, gas valves, etc. Since 2009, the company has been continuously recognized as a high-tech enterprise, Qingdao Municipal Enterprise Technology Center, and Qingdao Municipal Industrial Enterprise Design Center; won the “Qingdao Specialized and New Small and Medium Enterprise Title”; the company won the 19th Water Industry Enterprise “Leading Enterprise Award in the Field of Water Supply and Drainage Equipment” in 2021; its products have obtained many domestic and foreign product quality certifications, and is one of the most certified enterprises in the domestic water supply and drainage valve industry. In November 2016, the company was recognized as the first “UL-approved eyewitness testing laboratory” in the domestic valve industry, indicating that the testing capabilities of the company's related products have reached the leading international level, the “First Certification” at the Municipal Industrial Design Center, and the “China Patent Excellence Award” at the Beijing Fire Protection Exhibition.