Regulations Governing Custody and Investment of Funds by Securities Firms on Behalf of Customers Article 21

When a securities firm keeps custody of and invests funds on behalf of customers, customer funds shall only be transferred through inter-account remittance.
中文原文 證券商辦理客戶委託保管及運用其款項管理辦法第21條
證券商辦理客戶委託保管及運用其款項業務,其資金移轉皆應以帳戶間撥轉為之。

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