ASUSTeK Computer Inc. usually referred to as Asus, is a Taiwanese multinational computer hardware and electronics company headquartered in Beitou District, Taipei, Taiwan. It was founded in 1989 by T.H. Tung, Ted Hsu, Wayne Hsieh and M.T. Liao, all four having previously worked at Acer as hardware engineers. Its products include desktops, laptops, netbooks, mobile phones, networking equipment, monitors, projectors, motherboards, graphics cards, optical storage, multimedia products, peripherals, wearables, servers, workstations, and tablet PCs. Asus has also launched many Android-based smartphones, predominantly with Intel processors and often with two sim slots. Asus is currently is very influential in big mobile markets like India, China and other Asian countries.