This kind of transaction belongs to the local people, not the whole country. The principle of trading is similar to futures speculation, but the problems caused by many local people cannot be guaranteed. For example, some people will manipulate prices for regular futures (people with more money), and this situation will be much less. There are only more than 20 kinds of futures in China, so it is difficult to manipulate prices, and there are still some credibility problems.

Methanol 08 1 1 means that the price of methanol in June 2008 +0 1 is an expected price (for example, this contract was listed in June 2008 +0 and expired in June 2008 +0 1), which only reflects the long-term price response, and methanol companies can make up for this defect.

The continuous price obtained by averaging the contract price of methanol can reflect the price of the whole methanol market.

I understand the meaning myself, but I may not know it clearly. I suggest you read books about futures and read the basic knowledge to understand your later questions.