Urban public water supply, industrial water supply, sewage collection and transportation, rainwater discharge, reclaimed water reuse system, renovation and renewal of old pipeline networks.

Municipal water purification , treatments converts surface water or groundwater into qualified domestic water.

The treatment of saline wastewater in industrial production pro­cesses, including the collection or processing of oil and natural gas, thermal power gener­ation, solid fuel processing, printing and dyeing, papermaking, chemical and other indus­trial fields.