主营产品:R&D, production and sales of mechanical and electrical equipment, energy-saving and environmental protection equipment, plastic products, and fiberglass products.
主营产品:Wholesale and retail purification equipment and accessories, gas purification agent, monitoring instruments, dust collector, cleaning equipment, environmental protection and purification engineering design and construction
主营产品:Petroleum, petrochemical, chemical, coal, metallurgy, electric power, municipal, fire-fighting, medicine, universities and research institutes, environmental protection bureau, safety supervision bureau