4. Lenovo Group

Founded: 1984

Country: China

Employees: 27,000

Sales: $29.6bn 

Lenovo Group is a personal technology company spread across more than 160 countries. The company offers a variety of commercial desktops to businesses of all sizes. Its products include laptops, tablets, desktops, workstations and servers. The company is the no. 1 PC seller in India, according to a recent Gartner report. Of late, Lenovo beat Apple in the three months ending June for the second place in smartphone sales in China.

3. Samsung Electronics

Founded: 1969

Country: South Korea

Employees: 23,501

Sales: $142.4bn

Samsung is South Korea’s biggest, most profitable and most globally identified brand. Samsung Electronics is the flagship of Samsung Group, a conglomerate that controls more than 80 companies which includes businesses like building oil tankers and apartment complexes, running hotels and amusement parks and consumer electronics. 

The company recently lost patent battle to Apple in the US and has been asked to pay $1.05 billion in damages for violating Apple's patents for iPhone and iPad.