中国共产党百科∣党的基层组织 primary-level Party organization

A primary-level Party organization shall be formed in any enterprise, villagers’ committee, government organ, school, research institute, subdistrict and community, social organization, company of the People’s Liberation Army, and any other primary-level danwei [an organization where people work] where there are three or more full Party members.
企业、农村、机关、学校、科研院所、街道社区、社会组织、人民解放军连队和其他基层单位，凡是有正式党员三人以上的，都应当成立党的基层组织。