Medical Radiation Technologists Act Article 52

Establishment of National Federation of Associations for Medical Radiation Technologists shall be initiated by municipal and at least seven county (or city) associations for medical radiation technologists that have finished the organization procedures.
中文原文 醫事放射師法第52條
醫事放射師公會全國聯合會之設立,應由直轄市、七個以上之縣(市)醫事放射師公會完成組織後,始得發起組織。

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