Giant Manufacturing Co. Ltd. (commonly known as Giant) is a Taiwanese bicycle manufacturer, recognized as the world's largest bicycle manufacturer. Giant has manufacturing facilities in Taiwan, the Netherlands, and China.
Giant was established in 1972 in Dajia, Taichung County in the nation of Taiwan (now part of Taichung City), by King Liu and several friends.
A major breakthrough came in 1977 when Giant's chief executive, Tony Lo, negotiated a deal with Schwinn to begin manufacturing bikes as an OEM, manufacturing bicycles to be sold exclusively under other brand names as a private label.
As bike sales increased in the U.S., and after workers at the Schwinn plant in Chicago went on strike in 1980, Giant became a key supplier, making more than two-thirds of Schwinn bikes by the mid-1980s, representing 75% of Giant's sales.
By 2018, Giant had sales in over 50 countries, in more than 12,000 retail stores. Its total annual sales in 2017 reached 6.6 million bicycles with revenue of US$1.9 billion.
According to en.wikipedia