How to price and sell copper bars refers to the price based on the futures disk price. Futures prices and spot prices sometimes differ a little, but when the futures delivery date comes, futures prices and spot prices will tend to be the same. Point price can be understood as the price determined after bargaining. The reason for bargaining is the difference between the spot price and the futures price, that is, there is a price difference, and according to this difference, the price that both parties are satisfied with is finally determined. The price difference that both parties are satisfied with is the professional premium.