Company Act Article 223

In case a director of a company transacts a sales with, or borrows money from or conducts any legal act with the company on his own account or for any other person, the supervisor shall act as the representative of the company.
中文原文 公司法第223條
董事為自己或他人與公司為買賣、借貸或其他法律行為時,由監察人為公司之代表。

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