Zinc 03 is a futures contract on March 20 1 1, and the futures price is ahead of the spot market, so the "period" is understandable.

"Futures" means the future, so all contracts traded in the market are future. For example, now it is 10 month, then the contract of 10 month will be delivered on a certain day of this month, and then it can't be traded! Then I may buy the main contract of 20 1 102 or 20 1 103. Even if there is a contract of 20 10 1 1, the transaction is relatively light! If you don't know, you can send me a message in the station or check my contact information. You can't send the ball here!