Business scope: R & D, production and sales of environmental protection equipment and energy saving equipment; Technology development, technology promotion and technology service; Design, produce, act as an agent and publish advertisements; Enterprise management consulting; Cleaning service; Construction Engineering, decoration engineering, earthwork engineering, landscaping engineering construction; Engineering design; Construction waste cleaning; Leasing of machinery and equipment; Construction general contract, professional contract; Construction labor subcontracting; Maintenance, installation, debugging: Environmental monitoring equipment, household appliances, communication equipment, air conditioning equipment, computer software and auxiliary equipment; Computer system integration; Air pollution control; Sales: Filter, humidification bucket, building materials, hardware, computer hardware and software and auxiliary equipment, decorative materials, mechanical equipment and accessories, Kitchenware and sanitary ware, daily necessities, sporting goods, office supplies, monitoring equipment and accessories, household appliances, furniture.