Cooperatives Act Article 68

Entry, withdrawal, of cooperatives requires the resolution of the general meeting of members of the cooperatives.Entry, withdrawal, of a cooperatives union requires the resolution of the general meeting of the representatives of the union.
中文原文 合作社法第68條
合作社之入社或退社,應經各該合作社社員大會之決議。
合作社聯合社之入社或退社,應經各該聯合社代表大會之決議。

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