Regulations on Safeguarding Civil Aviation Against Acts of Unlawful Interference Article 29

A regulated agent shall ensure that the cargo of a known shipper meets the following criteria before regarding it as known cargo:1.The cargo is delivered by the personnel entrusted by the known shipper; and2.The known shipper possesses valid consignment papers; and in case of any modification of the papers, the signature of the known shipper shall be affixed thereto.
中文原文 民用航空保安管理辦法第29條
保安控管人應確認已知託運人之貨物符合下列事項,始得認定為已知貨物:
一、貨物係由已知託運人所委託之工作人員運送。
二、已知託運人具備有效之託運文件;文件如有修正,應有已知託運人之簽名。

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