Yong Ji Duan

SINA Corp. engages in the provision of online and mobile media services. It operates through the following segments: SINA Portal, Weibo, and Others. The SINA Portal segment offers automobile, fast-moving consumer goods, Internet, financial, information technology, and telecommunication services. The Weibo segment focuses on the marketing and development of the social media platform, Weibo. The Others segment includes mobile value added services; and other services. The company was founded in March 1999 and is headquartered in Shanghai, China.

Stone Resources Ltd. engages in the exploration and development of mineral resources. The company was founded on June 26, 1995 and is headquartered in Hamilton, Bermuda.

Zongyi Stone Development Co. Ltd. is a Chinese company that manufactures and distributes stone products.

Stone Group Holdings Ltd. manufactures and distributes electronics and healthcare products. The company was founded in September 03, 1987 and is headquartered in Hong Kong.

Part of Stone Resources Ltd., Stone Resources Ltd. (HK) engages in the exploration and development of property in mining areas. The company is based in Hong Kong, Hong Kong. Stone Resources Ltd. (HK was acquired by Stone Resources Ltd. on March 18, 2010 for $8.11 million.