Regulations Governing Futures Commission Merchants Article 44

When a futures commission merchant accepts futures trading brokerage orders, it shall take payment in New Taiwan Dollars or a foreign currency accepted by the clearing house.The payments referred to in the preceding paragraph shall be made through the customer's margin account. All withdrawals shall be made through bank transfer, and a detailed and accurate record and receipt shall be prepared as proof of payment.When a futures commission merchant accepts futures trading brokerage orders, if it is authorized by the principal to handle foreign exchange settlement procedures, it shall do so in accordance with the Regulations Governing the Reporting of Foreign Exchange Receipts and Disbursements or Transactions.
中文原文 期貨商管理規則第44條
期貨商受託從事期貨交易時,所收付之款項應以新臺幣或該結算機構所接受之外幣為之。
前項款項之收付,應透過客戶保證金專戶辦理之,該專戶內所有款項之提取作業應以轉帳方式辦理,同時應有詳實之紀錄及收付憑證。
期貨商受託從事期貨交易,經委託人授權代辦結匯手續者,於辦理結匯時,應依外匯收支或交易申報辦法規定辦理。

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