Oriental Beauty is considered a half-fermented tea, however the fermentation of Oriental Beauty tea leaves is higher than most other Oolong teas and can be fermented from anywhere between 65-85%.
Taiwan tea originated from Fujian, China. In the early 1800's a Fujian tea merchant took some seeds to Taiwan to see how well the plants would grow there. It proved to be very successful. Until now Taiwan tea has a history of more than 200 years.