Property service companies, also known as property management companies, usually have two types in managing residential areas: one is the property management company under the developer, such as Vanke Property of Vanke and Longhu Property of Longhu; The other is a third-party professional property management enterprise, such as dtz. From the professional vertical and profound point of view, third-party property companies are undoubtedly more professional; Property service companies with developer background, especially those with long-term development and multi-project operation, will pay more attention to providing high-quality property management services to enhance their brand and market influence, and create word-of-mouth communication for the sales of their projects, but they will be more attentive.