Shangzheng Valve Group Co., Ltd. is one of the top 30 leading enterprises in China. It was founded in 1980. After more than 30 years of development, it has become a large-scale research and development, design, manufacturing, sales and service. National level non-regional group. The Shangzheng Science and Technology Park, headquartered in Dongpu Industrial Zone, Wenzhou City, has a construction area of 26,000 square meters. More than 680 employees, more than 80 senior technical engineers. The Group has established a marketing headquarters and a high-tech valve R&D and production base covering an area of 80 acres in the “Changmae” central city of Shanghai. It has established more than 70 marketing service outlets in major cities across the country.