Chinese Constitution in 1969 - Page 15

Chapter VI -- Primary Organizations of the Party

Article 11

In general, Party branches are formed in factories, mines and other enterprises, people's communes, offices, schools, shops, neighbourhoods, companies of the People's Liberation Army and other primary units; general Party branches or primary Party committees may also be set up where there is a relatively large membership or where the revolutionary struggle requires.

Primary Party organizations shall hold elections once a year. Under special circumstances, the election may take place before its due date or be postponed.