Why doesn't China International Airlines call China Airlines?

China Airlines (hereinafter referred to as "China Airlines" and "China Airlines") was established on June1959+February 65438+June 6.

China International Airlines Co., Ltd. (Air China) was formally established in Beijing on 1988.

China Airlines was established early, and the English name of China Airlines Letter was the earliest. Air China could not use it, so it could only use Air China.