Beijing Dekang Jingyuan Environmental Protection Equipment Co., Ltd. sells machinery and equipment, accessories, water treatment equipment, air purification equipment, electrical equipment, wires and cables, fire fighting equipment, energy-saving and environmental protection equipment, electrical equipment, mechanical and electrical equipment, instruments and meters, office supplies, hardware and electrical appliances (excluding electric bicycles), building materials, chemical products (excluding hazardous chemicals), computers, computer software and accessories, electronic products; entrusted processing of environmental protection equipment, water treatment equipment, electrical equipment; goods import and export (except for state-owned trade management goods); landscape gardening engineering; basic software services; application software services; environmental protection monitoring; technological development; agency import and export; technology transfer; technology promotion; technical services; water pollution treatment; technical consultation (excluding brokerage); computer system integration; general construction contracting; labor分包; special contracting; energy-saving technology development; technical testing; computer system integration; educational technology development; new energy technology development; air pollution treatment; Internet information services; engineering survey; urban household waste sweeping, collection, transportation, and treatment.