Chunghwa Post Co., Ltd. is the official postal service of Taiwan. Chunghwa Post was a government agency of the Ministry of Transportation and Communications until 2003, when it was reorganized into a government-owned corporation.
Its affiliation with the Universal Postal Union began in 1914, but ended in 1972 when it was replaced by China Post shortly after China's seat in the United Nations was handed over to the People's Republic of China.
International reply coupons are not available to Taiwan, and mail is not delivered to or sent directly from Taiwan, but rather routed through third-party countries, with Japan Post as a major route facility for incoming mail sent from the Americas region.
Wikipedia https://en.wikipedia.org/wiki/Chunghwa_Post
Official Website https://www.post.gov.tw/
Phone +886 2 29664716
Coordinates 25°0'16.633" N 121°27'19.046" E