Futures futures held by the site must remain in your account margin threshold. Customer deposit can be divided into two parts, one for the original deposit, in order to maintain a margin. Maintenance margin is usually the initial margin of eighty percent to Qi Cheng. Customer margin by daily settlement price of the contract and the market price alignment, when a customer margin below the maintenance margin, the customer must make up the difference to the initial margin level. That is required to maintain your account in the establishment of parts of the minimum margin level, the account equity falls below the required maintenance margin, futures commission merchant it will issue a margin call.