Satellite Broadcasting Act Article 34

A satellite broadcasting business shall not use inserted characters, except under the following circumstances:1. To report a natural disaster or emergency;2. To publicize public service information;3. To announce a change of channel or program;4. To release non-commercial and information related to the program being broadcast; or5. As stipulated by other laws or regulations.
中文原文 衛星廣播電視法第34條
衛星廣播電視事業非有下列情形之一者,不得使用插播式字幕:
一、天然災害、緊急事故訊息之播送。
二、公共服務資訊之播送。
三、頻道或節目異動之通知。
四、與該播送節目相關,且非屬廣告性質之內容。
五、依其他法令之規定。

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