Industrial Group Act Article 31

The board of directors and the board of supervisors should hold meetings at least once a season respectively, alternate directors and supervisors have to attend these meetings as nonvoting delegates.
中文原文 工業團體法第31條
理事會、監事會應分別舉行會議,每三個月至少舉行一次,候補理事、候補監事均得列席。

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