Commercial Group Act Article 42

A national commercial trade association shall be established with approval from central competent authorities when there are more than three provincial commercial trade associations and commercial trade associations of municipality directly under central government.A national league of the commercial trade associations should be established with approval from central competent authorities altogether with central target business competent authorities when there are only less than seven provincial commercial trade associations and commercial trade associations of municipality directly under central government.County (city) commercial trade associations whose provincial league of commercial trade associations has dissolved or who do not belong to a provincial league of commercial trade associations may join the national commercial trade association and become a member.
中文原文 商業團體法第42條
全國有三以上省(市)成立省商業同業公會聯合會及直轄市商業同業公會者,經中央主管機關核准,得合組全國該業商業同業公會聯合會。
省商業同業公會聯合會及直轄市商業同業公會在全國成立之公會未達前項所定數額時,得由中央主管機關會商中央目的事業主管機關同意後,合組全國該業商業同業公會聯合會。
縣(市)商業同業公會因省商業同業公會聯合會解散或無省商業同業公會聯合會者,得加入全國該業商業同業公會聯合會為會員。

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