Suzhou Dongjing Environmental Technology Co., Ltd. is engaged in environmental management projects including: waste gas treatment system engineering, industrial dust filtration system engineering, ventilation system engineering and related environmental protection products and engineering. They are widely used in pesticides, medicine, chemicals, rubber, automobiles, electronics, engineering machinery, plastics, new energy and other industries. The products are sold well in China and exported to Europe, America and Southeast Asia.

The Nuclear Purification Company was restructured and established from the Air Purification Technology Research Institute of the Fifth Research and Design Institute of the Nuclear Industry. It is a national standard drafting unit for nuclear-grade air filters and a high-tech enterprise in Henan Province. It is currently a wholly-owned subsidiary of China National Nuclear Environmental Protection Co., Ltd. and is affiliated to China National Nuclear Corporation.