A deposit is required.
Not to mention their own behavior is not standardized, some people, in the process of some insurance transactions, there will be some trading agent. So in this case, you can really monitor your behavior and give yourself some protection when buying and selling futures. For them, it can also be monitored by the outside world, which is a very good move for both of them. Usually, they think that when futures are bought and sold, neither side needs to go to the cashier to deposit them.
It is also a way of behavioral norms.
But for such deposits, it is really necessary to investigate. Because after all, when they pay the deposit, the amount of the two people is exactly the same. At this time, the two of them will make themselves feel safe and will not engage in a series of bad behaviors. In this case, their own deposits will be taken away after they are issued, so for themselves, if they want to leave, some of these deposits can regulate their behavior.
For two people, it is necessary to pay a deposit when buying and selling, so as to show the sincerity of buying and selling. But also let the two of them regulate their own behavior, so that their behavior is bound to some extent.