YOY VALVE GROUP.YOY VALVE GROUP (YOY) was founded in 1984, the industrial park covers an area of 96,000 square meters, with registered capital of 101.8 million yuan, and the production of safety valves in 2021 reaches 250,000 sets. The company has more than 500 equipments such as intelligent machining centers, robot truss manipulators, CNC machine tools, including 3.5m extra-large vertical lathes, and is equipped with advanced testing facilities such as physical and chemical testing of metal materials and non-destructive flaw detection. The company mainly produces safety valves, butterfly valves, ball valves, gate valves, globe valves and other products, which are widely used in the fields of power station, petroleum, chemical industry, metallurgy and so on, covering nine categories of valves, such as safety valves, ball valves, globe valves, check valves and so on.