The risk control link is controlled by futures companies, and futures also have the right to make this provision.

Futures margin is not arbitrarily priced by each platform. For example, the exchange usually stipulates the minimum margin ratio, requiring futures companies to charge a margin of not less than this standard. Therefore, in futures trading, the margin is offline.

As for the online margin, it is not necessary, it is a general range, which is generally about +3% to 5% of the exchange margin ratio.