What does the code before the name of grain futures mean?

The first letter is the first letter of the English letter of this variant. . The number at the back is the contract period of this variety. 09 stands for year and 05 stands for month. .

For example, corn, British corn, so it is c0905. . Sugar, the contract starts with Sr. Copper, copper. . So the contract starts with cu. .

Ask the master to give me a name.

Why is there a fault in the futures K-line?

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The main contract of the liquidation contract of the stock market is the meaning of this contract!

Why does the futures leverage increase and the stop loss space decrease?

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What if the stop loss reaches the limit?

What do options mean? What does it contain?

Empty orders and turnover.