ASUSTek, better known, as Asus is a Taiwanese electronics and hardware manufactuer. The company was founded in 1989 and offers popular line of laptops and smartphones. It is the maker of Zenfone and ROG phones. Likewise, ZenBook and VivoBook are its popular line of ultrabooks. Meanwhile, it has seperate sub-brands, ROG(Flow, Strix, Zephyrus) and TUF for gaming laptops.