The significance of the cover number of the application for joining the party.

The significance of the cover number of the volunteer letter for joining the Party lies in that the organization department of the provincial party committee uniformly prints the volunteer letter for joining the Party every five years, and the number is compiled by the method of "(time interval)+unit number+serial number". The time interval is represented by numbers (for example, 20 16-2020). The unit number is represented by 2 digits, which is the serial number of the party (industry) Committee of each city, state and provincial system. The serial numb used is represen by 6 digits. According to the importance of the cover number of the application for joining the Party in the total control of party member and the annual development plan of party member, the use serial number range of each local system in a time interval is determined respectively.