The iron ore deposit (futures ferrosilicon deposit) of Soochow Futures is 654.38+10,000 yuan, and the calculation formula is: ferrosilicon trading unit: 1000/ 10 ton ferromanganese futures deposit =/kloc-0 *10% = The exchange margin of manganese silicon = 12%, that is to say, in fact, futures companies generally charge about 1 1%, and futures companies actually charge about 1 1%.