8600 yuan. Trading primary soybean futures needs to pay 6% of the contract price, which is equal to 8600 yuan. In other words, the margin for trading first-hand US soybean futures is 8600 yuan. The United States of America is called America for short, and its capital is Washington. Located in central North America, it borders Canada in the north, the Gulf of Mexico in the south, the Pacific Ocean in the west and the Atlantic Ocean in the east.