China So-and-So Co., Ltd. was established in 2014. Now the company has become a set design, development, production, manufacturing, sales in one of the valve manufacturing enterprises. It has a standard manufacturing base covering an area of 3,000 square meters. The company's mechanical processing, welding heat treatment, The production and testing center includes assembly pressure testing, physical and chemical testing, etc. It has more than 100 sets of various processing and testing equipment such as CNC machining centers, physical and chemical testing equipment, and non-destructive testing equipment. It has complete processing equipment and complete testing equipment.