2. Digital China Holdings

Founded: 2001

Country: China

Employees: 12,900

Sales: $9.1bn

Digital China Holdings Limited is the China's largest integrated IT services provider. Digital China provides uninterrupted integrated IT services to customers that cover IT planning and consultation, design and implementation of software solutions, outsourcing of IT system operation and maintenance, systems integration, IT distribution and maintenance.

1. Tencent Holdings

Founded: 1998

Country: China

Employees: 20,000

Sales: $4.5bn

Tencent Holdings is China's biggest Internet Company in terms of revenue. Started as an instant messaging service in the late 1990s, it is also China's largest online game operator. In June 2012, Tencent bought a minority stake in Epic Games, a developer of 3D game engine technology, and in July purchased a stake in financial news company Caixin Media to increase its content offerings. Last year, it launched online video and expanded e-commerce offerings to take on well-established players Youku and Alibaba Group.