Regulations Governing the Dedicated Deposit Account of Specialized Electronic Payment Institutions Article 7

A specialized electronic payment institution or trustee bank shall open a dedicated deposit account with a bank organized and registered in accordance with the Banking Act. However, a cooperative account may be opened with Chunghwa Post Co., Ltd., a credit cooperative, or the Agricultural Bank of Taiwan.
中文原文 電子支付機構專用存款帳戶管理辦法第7條
專營電子支付機構或受託銀行應向依銀行法組織登記之銀行申請開立專用存款帳戶。
惟合作帳戶之申請開立,得向中華郵政股份有限公司、信用合作社或全國農業金庫為之。

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