Regulations Governing Securities Finance Enterprises Article 8

Securities finance enterprises that handle the opening of principals' margin accounts are limited to opening one margin account for any one principal. The principal may only open one margin account through any one securities firm that handles margin purchases and short sales.A securities finance enterprise that handles the opening of margin accounts for principals shall make a credit search in accordance with the terms of the regulations governing account opening.The terms governing account opening referred to in the preceding paragraph shall be prescribed by the securities finance enterprises and reported to the competent authority for approval.
中文原文 證券金融事業管理規則第8條
證券金融事業受理委託人開立信用帳戶,以一委託人開立一信用帳戶為限;委託人僅得於同一代理融資融券業務之證券商處,開立一信用帳戶。
證券金融事業受理委託人開立信用帳戶,應依規定開戶條件辦理徵信。
前項開戶條件,由證券金融事業擬訂,報請主管機關核定。

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