20 15 February 15. As of July 10, 2023, according to the inquiry of official website of Zhuhai Housing and Urban-Rural Planning and Construction Bureau, since February 15, the self-occupied property units have not been sold or kept by the development and construction units, and the special maintenance funds for the first phase of the property have been deposited by the development and construction units, so the Zhuhai maintenance base has been in operation since February 15, and the maintenance fund refers to the special maintenance funds for residential buildings. Residential special maintenance funds refer to funds earmarked for the maintenance, renewal and transformation of residential parts and facilities after the expiration of the warranty period, and shall not be used for other purposes.