Established in 1993, its business scope: Automotive seals. In 2014 in Henan (Kaifeng) Branch set up 13500, business scope: automotive seals, in 2014 Chengtong Seals Co., Ltd. designated Yaohua company as the mixing rubber center and material base, and in 2014 with Hebei Automobile and Parts Industry Technology Research Institute jointly invested in the construction of product inspection and testing center. Established in 2015, the company's 50000 business scope: Automotive seals.