In fact, futures commissions are collected by the exchange in both directions. Although it is charged manually, the opening position and the level are calculated by one hand. According to the number of transactions, one night in Kaiping is charged, and the standard is the same.

Generally, a wave of market has gone for a long time, and a sharp rise or fall in a short period of time is often the market where the main force leaves or changes hands, and it should be closed.