Should the property be responsible for the blockage of the main sewer pipe in the kitchen?

Property service companies are responsible for the maintenance and management of facilities and equipment used in residential areas. In the absence of evidence that the pipeline blockage is caused by the improper use of the upstairs owners, the property service company, as the manager of the residential facilities, shall be liable for the losses. According to the law, the owner shall not destroy the original design scheme of the house, and the owner shall bear the main responsibility for rebuilding the pipeline. "Property Management Regulations" Article 51 Water supply, power supply, gas supply, heating, communication, cable television and other units shall be responsible for the maintenance and conservation of relevant pipelines, facilities and equipment within the property management area according to law. If the units specified in the preceding paragraph temporarily occupy or dig roads and sites due to maintenance, they shall promptly restore the original state.