If calculated according to the current price, the first-hand margin is 3800 according to the standard of the exchange.

Futures companies will add a few percentage points, and the margin is mostly around 6000.

Say more than 10 thousand, I guess it's a rookie

Cotton is 5 tons, not 10 tons.

4.3 yuan, the fee will be halved.

What is unclear about futures can be consulted.