It is clearly stipulated in the Staff Management Measures. This has nothing to do with the IB system of other companies. IB is the abbreviation of English introduction broker, which means introduction broker.

As an introduction broker of stock index futures, securities companies can introduce futures companies to investors, provide investors with futures knowledge training, make risk statements to investors, assist futures companies to sign futures brokerage contracts with investors, provide convenience for investors to carry out futures trading, assist futures companies to send additional margin notices to investors, and futures companies pay commissions to IB. However, IB is not allowed to accept investors' deposits and engage in futures brokerage business in disguise. Investors still need to invest in stock index futures through futures companies.