Bi Feng Zhang

CH-Gemstone Capital Management (Beijing) Co., Ltd. engages in the provision of medical and health care equity investment services. Its business activities include mergers and acquisitions, debt investment and financing, financial consulting, and wealth management financial investment banking services. The company was founded on February 4, 2005 and is headquartered in Beijing, China.

Ch-gemstone Healthcare Holdings (Beijing) Co., Ltd. engages in the provision and development of medical services and IT solutions related to the provision of medical care. Its areas include online treatment systems, integrated healthcare systems, and smart healthcare systems. The company was founded on November 18, 2011 and is headquartered in Beijing, 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.