Professional to undertake the following activities: 1. All kinds of cracks in buildings and underground concrete projects, expansion joints, construction joints, structural joints 2. The old floor water trap water trap, downspouts, toilet water maintenance, exterior walls, window sills water trap 3. The dam seepage reinforced concrete cracks engineering, tunnels, bridges, water maintenance. 4. subway, tunnel, culverts, sewage treatment pond, concrete cracks leak water, with water plugging, heat trap works. 5. basements, underground garage, swimming pool, bathroom, underground tunnels, concrete cracks grouting repair works. 6. roofing, facades, metal housing, window sills and other insulation works 7. bathroom, toilet renovation project, partition construction company in Shenzhen:? 134-18884-037 construction company for free site survey, to declare construction prices, the development of construction technology programs.