Manufacturing and Sales: Air pollution control equipment, sedimentation and filtration systems, pond equipment, biological treatment equipment, chemical treatment equipment, anaerobic equipment, physical treatment equipment, sludge treatment equipment and systems, integrated wastewater treatment systems, water quality pollution prevention grilles, harmless treatment equipment; Research and development, transfer, and consulting services for environmental protection technology; Sales: water treatment chemicals; Contracting: environmental protection projects, pipeline projects (excluding pressure pipelines) (As required by laws and regulations, the scope of business is subject to approval by the relevant administrative authorities.)