Business Entity Accounting Act Article 35

(Signature and Seal on Accounting Vouchers and Books)Accounting vouchers and accounting books shall be signed or sealed by the responsible persons of a business entity, its officers, chief accounting personnel, and the accounting personnel handling and in charge of the accounting events. However, when accounting vouchers are signed or sealed by the business's officers, its chief accounting personnel, or the accounting personnel handling and overseeing the events under the authorization of the responsible persons of the business, this requirement shall not apply.
中文原文 商業會計法第35條
記帳憑證及會計帳簿,應由代表商業之負責人、經理人、主辦及經辦會計人員簽名或蓋章負責。
但記帳憑證由代表商業之負責人授權經理人、主辦或經辦會計人員簽名或蓋章者,不在此限。

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