According to the trading principle of American oil companies, the first-hand contract volume is 1 1,000 barrels, and the leverage is 1 1,000 times, which is about 3 points to return the capital. Therefore, the first hand of trading: profit and loss = (closing price-opening price) * contract unit * number of trading hands = (72-68) */kloc-

American crude oil fluctuates greatly, with high leverage, low margin, low price difference and many trading opportunities. It is a popular financial investment product with small scale, high income, high risk and low investment.