Enforcement rules concerning the implementation of industrial group act. Article 32

When the meeting affairs and operation of industrial board of trade concern the authorities of directors and supervisors, it should be conferred in meeting attended by both more than half of the directors and supervisors respectively, the decisions shall take effect only when approved by more than half of the directors and more than half of supervisors attending the meeting.
中文原文 工業團體法施行細則第32條
工業同業公會之會務與業務涉及理事會及監事會之職權,須共同協議時,得召開理事監事聯席會議,其決議應各有理事監事過半數之出席,出席理事監事各有過半數之同意行之。

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