Three. According to the construction observation of official WeChat account, the trademarks of Beixin Waterproof Group are Yu Wang, Shuyang and Golden Thumb, so Beixin Waterproof has three brands. Beixin Yu Wang is a professional manufacturer of waterproof materials with a long history in China, which was established in 1985. It is the first to introduce Spanish and Italian technology and equipment, and it is a leading enterprise in building waterproof industry in China. Beixin Shuyang is one of the brands of Beixin Waterproof Group, and its products cover asphalt coiled material, self-adhesive coiled material, polymer coiled material, high-speed rail, road and bridge, waterproof coating and so on 100 varieties. Beixinjin Thumb Waterproof was established in March 2000. Is a waterproof system integrated service provider integrating waterproof material research and development, production, sales, construction and technical services.