Answer: A, B, C, D

Futures companies should bear the primary responsibility for handling investor complaints, establish and improve the customer complaint handling system, disclose the complaint handling process, and handle it properly Customer complaints and disputes with customers. Futures companies shall properly preserve customer account opening information, entrustment records, transaction records and various materials related to internal management and business operations. No one may conceal, forge, tamper with or destroy them. Except for being investigated and inspected in accordance with the law, futures companies shall keep the confidentiality of customers. , shall not be illegally provided to others. The retention period of customer information shall not be less than 20 years from the date of account cancellation. Futures companies shall comprehensively and objectively introduce relevant laws, regulations, business rules, and characteristics of products or services to customers, fully disclose risks, truthfully provide relevant materials and information to customers in accordance with the provisions of the contract, and shall not defraud or mislead customers.