Public maintenance fund refers to the maintenance fund for public parts, facilities and equipment of residential buildings. The maintenance fund for units selling public houses is jointly raised by the units selling houses and the employees buying houses, and the ownership belongs to the purchaser, which is used for the maintenance of public parts and facilities of residential buildings. According to the law, * * * refers to the main load-bearing structural parts of the house (including foundation, internal and external load-bearing walls, columns, beams, floors, roofs, etc.). ), outdoor walls, hallways, stairwells, corridors, etc. The maintenance fund is used for the large and medium-sized repair, renewal and transformation of * * * old parts and * * * old equipment and facilities after the property warranty period expires. When Party B transfers the ownership of the house, the balance maintenance fund will not be returned and will be transferred with the ownership of the house.