Article 1 of the Provisions on Establishing the Suitability System of Stock Index Futures Investors (Trial) stipulates: "In order to urge futures companies to establish and improve their internal control and compliance systems, establish and improve their customer management and service systems with knowing customers and classified management as the core, protect the legitimate rights and interests of investors, and ensure the stable, standardized and healthy operation of the stock index futures market, according to the Regulations on the Administration of Futures Trading, the Measures for the Administration of Futures Exchanges,