Closing price of coal: also called FOB. Refers to the price of coal shipped to the port, including all expenses before boarding, that is to say, the seller ships the coal, but does not pay the transaction price of sea freight.

Term of stock market futures: Closing a position refers to selling a previously bought contract or buying a previously sold contract. After closing positions, positions are reduced, short positions are equivalent to buying, and long positions are equivalent to selling. The whole process of futures trading can be summarized as opening positions, holding positions, closing positions or physical delivery. Opening a position, also known as opening a position, refers to the new purchase or sale of a certain number of futures contracts by traders.