the invoice of Zigong maintenance fund is issued by the local housing management department. Zigong maintenance fund invoice is issued by the local housing management department, and it is filed in the maintenance fund window of the housing management bureau. Because the housing maintenance fund is generally collected by the developer, and then transferred to the real estate management center by the developer. The owner should pay this fee to the developer one month before handling the real estate license, and then the developer will transfer it to the real estate management center. Therefore, the invoice of Zigong maintenance fund is issued by the local housing management department. Maintenance fund generally refers to residential special maintenance funds. Residential special maintenance funds refer to the funds earmarked for the maintenance, renewal and transformation of residential parts and facilities after the warranty period expires, and shall not be used for other purposes. Therefore, the invoice of Zigong maintenance fund is issued by the local housing management department.