Custody of some investors' transactions: the futures company only completes the daily transactions of some investors through the comprehensive trading platform, and the settlement is still completed by the futures company's own main system according to the settlement documents issued by the exchange. Therefore, futures companies need to apply for at least one seat in each exchange for the comprehensive trading platform, and transmit the deposit and withdrawal data of these investors to the comprehensive trading platform in real time through data synchronization tools. Futures companies need to transfer the settlement data of these investors to the comprehensive trading platform after completing the settlement business of the main system in each trading day, so as to realize data synchronization between systems. Brokers can also manually complete the synchronization of customer consumption accounts and rate adjustment on the comprehensive trading platform, without the tedious synchronous data transmission every trading day. This method is suitable for members who want to make a preliminary attempt, have insufficient system capacity or want to provide differentiated services for some investors.

Custody of all investors' transaction settlement: Futures companies complete all futures brokerage business such as all investors' fees, deposits and withdrawals, silver transfer, trading, settlement, delivery, warehouse transfer, margin monitoring documents and anti-money laundering reports through the comprehensive trading platform. Futures companies that accept this method will not have to consider issues such as system upgrade, new functions of futures market and disaster recovery system construction. To this end, futures companies need to apply for at least one seat in each exchange for the comprehensive trading platform, and before the comprehensive trading platform is officially launched for daily business, it is also necessary to provide synchronized data of previous systems for the comprehensive trading platform. This method can reduce the initial investment of futures companies on a large scale, completely eliminating the subsequent system upgrade and disaster recovery investment, and is suitable for all futures companies wishing to complete futures brokerage business in the service lease mode.

Disaster backup transaction custody: Futures companies only provide emergency trading channels for all investors through the comprehensive trading platform when their main system fails, and can also temporarily complete settlement business through the comprehensive trading platform when their main system cannot be restored to normal in a short time. To this end, futures companies need to apply for at least one seat in each exchange for the comprehensive trading platform. After the settlement of each trading day is completed, all investors' deposits and withdrawals, user passwords and other data are transmitted or synchronized to the comprehensive trading platform in real time. Every trading day, futures companies need to synchronize the settlement data of all investors to the comprehensive trading platform after completing the settlement business of the main system. This method is suitable for futures companies that only want to obtain disaster backup services.