1, Sewage drain: Municipal engineering drainage, factories, enterprises, chemical, pharmaceutical industries 2, All kinds of construction engineering, drainage engineering: Stadiums,Railway,High speed etc. 3, Low pressure water conveyance project: Farmland, Orchards, forestry of irrigation and drainage. 4, Ventilation and communication engineering: Mine ventilation, Mine wall permeability tube, Railway and highway cable cable, Telecommunications, protect the casing.
