The Enforcement Rules of the Immigration Act Article 31

The term “immigration organizations,” as stated in Paragraph 4 of Article 56 of the Act, refers to organizations that conduct immigration affairs and pursuant to the Commercial Group Act or the Civil Associations Act.
中文原文 入出國及移民法施行細則第31條
本法第五十六條第四項所稱移民團體,指從事移民會務,並依商業團體法或人民團體法規定核准成立之團體。

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