Undertake a variety of engineering of buildings and underground concrete cracks, expansion joints, construction joints, structural joints plugging sealed, water conservancy and hydropower project reservoir dam grouting, cracks in the tunnel plugging, seepage, cracks in the dam concrete, Seepage of tunnels, bridges, water-proof maintenance works. The sales agents waterproof material. 2, subway, tunnel, culverts, sewage treatment ponds, landfill seepage, concrete cracks leak water, with water plugging, insulation trap Engineering. 3, expansion joints, construction joints, concrete cracks leak water, with water plugging waterproof repairs. 4, roofing concrete slab crack through the wall pipe, a corner, leakage of water, with water plugging, roof insulation trap works. 5, waterproof construction design, waterproof material sales. 6 Division I of the construction project, implementation of a five-year warranty. Main products or services: water, trapping, grouting work.