The company needs to promulgate rules and regulations. What should be the document number of the rules and regulations? Company symbol "system"+year+serial number?

It depends on whether your company has established standards and systems for document management. The types currently used are as follows:

Issued by the General Department or General Office: XXXX (company abbreviation) office+[year number]+document serial number;

Financial management, administration, party, league, trade union, accounting, supervision and auditing, personnel, etc. , just replace the "office" above with the abbreviation of the former.

The distribution of general meeting minutes is: meeting minutes+year number+serial number.