This system, also known as the daily maximum price fluctuation suppression, actually means that the investment price of contract futures fluctuates within a certain trading day and cannot be lower or higher than the fluctuation range limited by laws and regulations. Quotes operated by investors whose prices exceed the fluctuation range will be directly regarded as invalid transactions and cannot be settled.

The second system: keep the position limit.

Literally, it is not difficult to see that the position is limited. Refers to the futures trading center. In order to prevent all kinds of risks in the futures trading market from being too concentrated on a few investors and to prevent market price manipulation. For investors who buy and sell in the market, maintaining the number of positions is a limited system. If the number of investors' positions exceeds the limit, they will be forced to close their positions or increase the margin ratio.

The third system: settlement once a day.

In futures trading, settlement shall be made according to the trading center. The futures trading center implements a debt-free daily settlement system. Specifically, when the investor ends the transaction every day, the trading center will settle all the loss of profits, margin and handling fees of the contract terms according to the settlement price of the investor on that day, and then transfer the payable funds at the same time, thus increasing or decreasing the reserve funds of the investor.

The fourth system: physical delivery

This system means that after the contract futures drawn up by the futures trading center arrive, the buyers and sellers transfer the ownership of the goods contained in the contract futures according to the original regulations, and settle the unsettled contracts.