A pipe cleaning: equipped with the most advanced high-pressure cleaning truck, high pressure cleaning with high pressure shoot water on the pipe wall dirt the perennial area under the dirt removal rate of more than 95%. The Beijing Environmental Sanitation Bureau professional sign the agreement before the EIA companies. Qing septic tank: septic tanks, latrines through dedicated sealed sewage suction vehicle, pumped to the the fecal elimination on treatment station, concentrated harmless operation process. Septic tanks, grease traps, sewage wells Qingtao, pumping, artificial digging septic tanks, grease traps, the sewage well bottomhole sewage removal and transportation work. Pipeline dredge: municipal drain, industrial cleaning, indoor and outdoor sewage main channel dredge pipeline dredge of various difficult. Trenchless pipe installation and maintenance: Municipal sewage pipes, factory sewer, gas pipeline renovation and trenchless pipe installation. The property clean: hotels, shopping malls, factories, office buildings, commercial and residential, and public places to provide cleaning and wall cleaning, glass cleaning services. Water trap: residential buildings, factories, offices, shops, roof water trap service. Indoor bathroom, kitchen, roof and wall waterproof construction. Professional punch: large and medium-sized drilling machinery, can play a variety of hole in the wall, air conditioning holes and ventilation duct openings, pipeline fire drill holes trough hole walls perforated wall demolition demolition slab reinforcement drill holes. Eight. Underwater operations: diving operations, underwater salvage, underwater survey, underwater mechanical operation.