Regulations Governing Investment in Securities by Overseas Compatriots and Foreign Nationals Article 18

An offshore overseas compatriots or foreign national investing in domestic securities shall designate a domestic agent or representative to apply for the opening of a New Taiwan Dollar account. The agent designated to open such account must be a domestic securities firm or financial institution.An offshore overseas compatriots or foreign national investing in domestic securities or otherwise utilizing funds [in the ROC] must open a current account or a current savings account denominated in New Taiwan Dollars at a domestic financial institution. Such account must be opened specifically as a custodial account to be used by a custodian institution for the provision of custodial services at the investor's request. Such account shall only be for the purpose of settling transactions.
中文原文 華僑及外國人投資證券管理辦法第18條
境外華僑及外國人投資國內證券,應指定國內代理人或代表人申請開設新臺幣帳戶。
其指定之開戶代理人,以國內證券商或金融機構為限。
境外華僑及外國人投資國內證券及其資金運用,限以保管機構受託保管專戶之名義,在國內金融機構開設活期存款或活期儲蓄存款之新臺幣帳戶;其帳戶僅供交割之用途。

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