The handling fee of the thermal coal exchange is 8 yuan, and if you do it, he will charge you 8.3 unilaterally. But some varieties are calculated according to the ratio of ten thousand, so there is a ratio of ten thousand +0.2.

In fact, as long as the handling fee is not too high, it is mainly service. The broker helped you avoid a wrong order and saved you a year's handling fee.

Those with +0.2+0.3 are generally left to fend for themselves after opening an account.