The Jiangsu Taixing blue color valve company had been established in 1993, the company area 12, 000 square meters, the registered capital is 4 million Yuan, the equipment fixed asset more than 13 million Yuan. Originally take produces the road intelligence traffic control device as the principal work. In May, 2001, the company takes the lead to develop the rubber check valve (namely duck mouth valve) the series product, in the same year in August, Produces the domestic first rubber check valve (namely duck mouth valve).

Researched and developed technical along with the company the unceasing enhancement and the production scale unceasing expansion, the company has developed successively from the DN25mm-DN2200mm 40 kind of different specifications circular rubber check valves (namely duck mouth valve), with each kind of non- sign design square edged orifice rubber check valve (namely duck mouth valve), and realized the scale sale in 2003 in the national scope, the product has applied one after another in places the such as Beijing, Tianjin, Shanghai, Nanjing municipal administration dewatering excavation, and has obtained user's consistent appraisal.