1. Insufficient deposit in investor's account. At the time of settlement, the investor's funds are insufficient to pay the contract deposit. After notifying the customer, if the customer fails to make up the margin, the futures company will close the customer's position.

2. Contract positions about to enter the delivery month. The exchange requires investors to hold contracts that are about to enter the delivery month. Investors must close their positions or adjust to the positions specified by the exchange on the last trading day one month before the delivery month, otherwise the futures company will close its positions.

3. Hold a continuous price limit contract. All the terms of the transaction require investors who have made three consecutive profits in the same direction to close their positions.