Different exchanges and different physical delivery methods have different provisions on the settlement price of delivery, including: (1) Zhengzhou Commodity Exchange adopts a combination of rolling delivery and centralized delivery, and the settlement price of delivery is the arithmetic average price of the settlement price of the futures contract 10 trading days (including the matching date); (2) Shanghai Futures Exchange adopts centralized delivery of copper and aluminum, and its settlement price is the settlement price of the futures contract on the last trading day; (3) The rolling settlement price of Dalian Commodity Exchange is the trading day settlement price, and the centralized settlement price is the weighted average price of all the trading prices of futures contracts from the first trading day to the last trading day of the delivery month.