Jian Cheng Zhou

Founded in 2000, Zhejiang Dunan Precision Industries Group Co. Ltd. is a precision machine manufacturing Chinese company that is part of DunAn Holdings Group Co., Ltd. The company is based in Zhuji, China.

Part of DunAn Holdings Group Co., Ltd., Anhui Dunan Chemical Group Co., Ltd. is a Chinese company that manufactures and distributes industrial machineries. The company is based in Dangtu, China. The company also provides consultation services for explosives and non-hazardous chemicals.

Konan Chemical Manufacturing Co., Ltd. manufactures and supplies industrial chemicals. It engages in the production and distribution of intermediate and phenol chemicals. The firm also offers processing of health foods. Its products include para-cresol, p-toluenesulfonic acid monohydrate, para-ethylphenol, and xylenol. Konan Chemical Manufacturing was founded on June 15, 1952 and is headquartered in Yokkaichi, Japan.

Dun'an (Tianjin) Energy Saving System Co., Ltd. provides energy conservation and environmental protection services. Its business activities include environmental protection technology development, energy technology development and consulting, mechanical and electrical equipment installation engineering, heating and cooling engineering design and construction, energy management contracting services, energy-saving diagnosis and services, sale of machinery and hardware, and sale of coal and thermal energy. The company was founded on March 17, 2011 and is headquartered in Tianjin, China.

Zhejiang Dun'an Energy Saving Technology Co. Ltd. engages in the energy conservation and environmental protection services. It develops energy-saving & environmental protection technology and provides green & new energy technology solutions, energy integrated cascade utilization & clean energy development, green energy supply management. The company was founded on December 24, 2014 and is headquartered in Hangzhou, China.