Hearing Specialists Act Article 57

A foreigner may attend a hearing specialist examination in accordance with the laws of the Republic of China.If a foreigner has passed the examination under the preceding paragraph and received a hearing specialist certificate, he/she shall apply for approval as required by law prior to practice in the Republic of China. Such a person shall also comply with the applicable laws of the Republic of China in relation to hearing specialists, the code of professional ethics, and the articles of association of hearing specialists associations.
中文原文 聽力師法第57條
外國人得依中華民國法律,應聽力師考試。
前項考試及格,領有聽力師證書之外國人,在中華民國執行業務,應依法經申請許可後,始得為之,並應遵守中華民國關於聽力師之相關法令、專業倫理規範及聽力師公會章程。

English translation for reference only; the Chinese text prevails. Not legal advice.