第四阶层是自律性规则，主要由上海交易所和深圳交易所制定，包括《股票上市

The fourth level is self-regulatory rules, mainly formulated by the Shanghai Stock Exchange and Shenzhen Stock Exchange, including the "Stock Listing Rules", "Guidelines for the Content and Format of Stock Listing Announcements", and "Guidelines for Information Disclosure of Companies Listed in Domestic and Overseas Markets" , "Temporary Announcement Format Guidelines", "Memorandum of Information Disclosure of Major Asset Reorganizations of Listed Companies", etc., which stipulate further detailed operational specifications based on specific problems encountered in actual operations

The fourth sector is self-regulatory rules, mainly formulated by the Shanghai Stock Exchange and Shenzhen Stock Exchange, including the "Stock Listing Rules," "Guidelines on the Content and Format of The Listing of Stocks," "Guidelines for The Disclosure of Corporate Information listed at the same time in domestic and foreign markets," "Guidelines on The Interim Announcement Format" and "Memorandum of Understanding on Information Disclosure of Major Asset Assets of Listed Companies", which provide for further refinement of the operating norms based on specific problems encountered in practice.

The fourth level is the self regulatory rules, which are mainly formulated by the Shanghai Stock Exchange and Shenzhen Stock Exchange, including the stock listing rules, the guidance on the content and format of the stock listing announcement, the work guide for information disclosure of companies listed in domestic and foreign markets at the same time, the guidance on the format of temporary announcement, and the working memorandum on information disclosure of material assets reorganization of listed companies According to the specific problems encountered in the actual operation, the operation specification is further refined