Engages in the production and sales of: water treatment equipment, electric boilers, energy-saving boilers, integrated wastewater treatment units, fiberglass septic tanks, intercepting oil-water separator and recovery systems, water supply and drainage equipment, water supply equipment, pure water equipment, drinking water equipment, energy-saving and environmental protection equipment, swimming pool water treatment equipment, wastewater treatment equipment, reclaimed water recycling equipment, electrical automation equipment, fire protection equipment, refrigeration equipment, electrical control equipment, stainless steel water tanks, fiberglass water tanks, plastic water tanks, disinfection equipment, bottling equipment, air purification equipment; pipeline installation; import and export of goods or technology (excluding goods or technology import and export prohibited by the state or involving administrative approval); engineering equipment installation and construction, rural toilet renovation; rainwater collection and treatment equipment manufacturing; pipeline engineering, boiler installation, on-site pipeline maintenance; distribution of: water treatment filter media, consumables, pumps, scale inhibitors, reverse osmosis membranes, instruments and meters, boilers, valves, variable frequency drives, fans, hardware and electrical appliances (excluding wireless microphones), plastic containers, building materials, steel, water treatment materials and accessories, plumbing fittings, insulation equipment.