(1) In the first case, the position has been opened and the transaction has been completed, and the order cannot be cancelled, only the position can be closed. If there is no liquidation, of course, you can withdraw the order without deducting the deposit;

(2) In the second case, if it is possible to close the position before the closing, you can not close the position, as long as the funds in your account can meet the requirements of the deposit (according to the closing settlement price). If the funds are insufficient, the futures company will inform you to make up the funds the next day, or inform you to close the position manually. If you don't take action, the futures company will help you close your position;