Ren Zhou Dong

Hunan Tianjicaotang Pharmaceutical Co., Ltd. engages in the research, development, production, and sale of Chinese patent medicine. It offers heart-clearing and detoxifying medicine, cardiovascular medicine, and urology medicine. The company was founded on November 20, 1992 and is headquartered in Changsha, China.

Hunan Huitong Advanced Materials Co., Ltd. engages in the research and development of metal fibers & products, electromagnetic shielding materials and other advanced materials. Its products & applications include metal fiber, metal fiber sintered felt, ultra-fine metal composite wire, conductive spun yarn, conductive plastics, metal fiber burner and technical textile. The company was founded on January 10, 2002 and is headquartered in Changsha, China.