Enforcement rules concerning the implementation of industrial group act. Article 16

In addition to registration under circumstances of particular changes, industrial board of trade should make a member factory registration book and a member representative registration book respectively, and it should check the registration books one month before the calling of general meeting every year so that it may revise the registration books accordingly; industrial board of trade should make a scroll of member factories and a scroll of member representative respectively and send them to competent authorities for check and reference 15 days before the calling of general meeting.
中文原文 工業團體法施行細則第16條
工業同業公會應分別設置會員會籍登記簿(卡)及會員代表登記簿(卡),除辦理平時異動登記外,並應於每年召開會員大會前一個月,辦理會籍總清查,據以校正會員代表登記簿(卡),並造具會員及會員代表名冊各一份,於召開會員大會十五日前,報請主管機關核備。

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