Mr. Xuegang Yang served as Board Member and Advisor at HDKaraoke. He serves as Chairman at Risun Holding Co., Ltd., a company with annual revenue of 3 billion USD in 2010. Risun Holding Co., Ltd., through its subsidiaries, engages in the production and sale of coke chemicals in China. It serves various industries, including steel manufacturing, chemicals, energy and aluminum. The company was founded in 1995 and is based in Beijing, China.