There are more than forty kinds of commodity futures, and the margin ratio of different varieties is different. The margin ratio of various varieties can be inquired in official website of Everbright Futures. The first-hand margin is equal to the contract price multiplied by the contract unit and then multiplied by the contract margin ratio. For rebar, if the price is 3970, the contract unit is 10, and the company's margin ratio is 15%, then the margin required for primary rebar is 3970 times 10 and then times 15%, which is equal to 5955 yuan.