Relationship between liquefied gas 03 and 04 contracts

The relationship between these two contracts is mainly reflected in their price trends. Contract 03 refers to the liquefied petroleum gas futures contract for delivery in March, and contract 04 refers to the liquefied petroleum gas futures contract for delivery in April. LPG contracts 03 and 04 refer to LPG contracts traded in two different months in the commodity futures market.

What does the futures consideration mean?

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Let me ask you something. I just passed the futures qualification examination 1 1 in June, and I may not be engaged in futures work for the time being. Will this qualification expire?