Water spectrum bridge conservation engineering ltd. Is registered at no. 66, pundu commune, new waterfront lake, hebei province. The registration authority is the new waterfront lake business administration, with legal representatives yang guangyang, operating in the areas of road bridge maintenance works, bridge waterproofing works, bridge detection, strengthening of bridges, bridge stretching, rubber subsidence, pelvis, acoustic cavity, steel liner, water stopper, closed-hole foam sheet, waterproofing materials, sealed rubber, steel band web, beam plate, earthworking materials, steel fibres, leaking pipes, fences, protective nets, acoustic barriers, sale of gas cores, installation, replacement and maintenance. (projects subject to legal approval may not operate without the approval of the relevant department)