They are not a specific futures contract, but are displayed by a number of related futures contracts, and cannot be traded directly (but the futures contracts displayed at that time can be traded).

Shanghai Copper Continuity: The futures contract that entered the delivery month through linkage shows that the 0909 contract is currently displayed;

Shanghai Copper III: From the futures contract entering the delivery month to the futures contract counting down for three months. Currently, contract 0912 is displayed;

Shanghai Copper Company IV: It is displayed by connecting the futures contract that entered the delivery month with the futures contract that counted down to four months. Currently 100 1 contract is displayed.

10 stands for 20 10, 0 1 stands for 1 month, 100 1 stands for futures contracts due for delivery in 20 10 years 1 month.

The others are similar.