FIFA, 9 Jun (Xinhua)-- the China Securities Association has issued a circular on four self-regulatory rules, including the detailed rules for the implementation of Securities Brokerage Business Management and other self-discipline rules. Clarify the norms of securities brokerage business marketing activities. First, strengthen the unified management of marketing activities of securities companies, make it clear that securities companies should formulate a marketing management system and stipulate the audit requirements of marketing activities. The second is to clarify the scope of other securities business services that securities companies can provide to investors in the process of securities brokerage business marketing activities, including market information, investor education services and so on. Third, it further emphasizes that monopoly and unfair competition should not be carried out, and at the same time puts forward requirements for the public form of service cost measurement and commission collection standards.