Actual profit and loss = lots * opening and closing price difference * contract size-handling fee

= 10 lot *(3600-3000) yuan/ton * 10 ton/receipt -40 yuan/hand *2 (bilateral) * 10 lot.

=59200

Note: The actual profit and loss has nothing to do with the margin rate.

I think the commission is unilateral, so Kaiping warehouse adds up to *2.

It has been revised, and the handling fee was not increased yesterday.