Dong Guo

Beijing Haohan Data Technology Co., Ltd. engages in the designing and implementation of network intelligence and information security protection solutions, software and hardware design and development, product sales and technical services. The company was founded by Zhen Ming Lei on June 28, 1994 and is headquartered in Beijing, China.

Jiangxi Ningxin New Material Co., Ltd. engages in the research and development, production, and sale of special graphite, and graphite products. It offers purity graphite, electrodes, silicon carbide, carburizers, and diamond materials. The company was founded on May 21, 2007 and is headquartered in Yichun, China.