Compared with domestic futures, foreign futures are almost the same in trading mechanism, such as long short and T+0 trading. The difference is that (1) the general price control of foreign futures is less, and it is a semi-strong efficient market, which follows the fundamentals and fluctuates less; (2) Strict supervision, and few irregularities such as misappropriation of customers' funds and gambling; ③ The leverage of external futures is slightly higher than that of internal futures; (4) The handling fee is low. Take Meijing Copper as an example. The first-hand scenic copper is 25,000 pounds (i.e. 1 1.34 tons), and the unilateral fee is 15 dollars (102 yuan), and the transaction cost per ton is 9 yuan. 5 tons of domestic primary copper, calculated according to the turnover, 60000X5X8%%=240 yuan, and the transaction cost per ton is 48 yuan. There is also a charge outside the liquidation. Even so, it is half cheaper than domestic ones.