For example, you are a zinc ingot trader. When you buy the spot and feel that the price is going to fall, you sell the futures corresponding to the opening position in the futures market. When you sell the spot, you can buy and close the futures, which does not involve futures delivery.

Of course, if the premium of futures is relatively high and the profit of delivery on futures is much higher than that of spot direct selling, then delivery can be considered at this time, and then spot delivery must be made at this time.