Commercial Group Act Article 34

Multi-occupation corporations or firms that join more than two commercial trade associations should pay their membership dues to each commercial trade association according to the turnover of each trade in accordance with the articles of relevant commercial trade association.
中文原文 商業團體法第34條
公司、行號兼營兩類以上商業,同時加入二以上商業同業公會者,其會費之負擔,依其參加公會部分之業務狀況,按前條規定,分別核計繳納之。

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