Regulations for Joint Tendering Article 8

Where a joint tendering is permitted, an entity shall prescribe in the tender documentation that a tender to this purpose must be signed by all member suppliers participating in the joint tendering, or by the designated representative supplier specified in the joint tendering agreement. The aforementioned requirement shall also apply in the events of amending or supplementing the content of the tender, or signing, supplementing or amending the contract.
中文原文 共同投標辦法第8條
機關允許共同投標時,應於招標文件中規定共同投標廠商之投標文件應由各成員共同具名,或由共同投標協議書指定之代表人簽署。
投標文件之補充或更正及契約文件之簽訂、補充或更正,亦同。

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