Regulations Governing Permission and Administration of Securities and Futures Business Dealings and Investment Between the Taiwan Area and the Mainland Area Article 21
When a Taiwan-area securities firm or a third-region subsidiary increases the amount of its equity investment in a Mainland-area securities or futures institution, the Taiwan-area securities firm shall submit required documentation and apply to the competent authority for permission in accordance with Article 19.
中文原文 臺灣地區與大陸地區證券期貨業務往來及投資許可管理辦法第21條
臺灣地區證券商或其第三地區子公司增加對大陸地區證券、期貨機構之參股投資金額，臺灣地區證券商應依第十九條規定，檢附文件向主管機關申請許可。