Regulation Governing Organization, Mediation Procedures and Fees of Arbitration Institution Article 20

An arbitration institution shall have 20 or more registered arbitrators within 1 year beginning with the day of completion of its establishment registration.
中文原文 仲裁機構組織與調解程序及費用規則第20條
仲裁機構自完成設立登記之日起一年內,登記之仲裁人應達二十人以上。

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