What are the best property service companies in China?

Properties with first-class qualification or second-class qualification that want to upgrade and promise first-class service are all good. . Like Vanke, Gemdale, China Shipping, Greenland, Greentown, Pearl River, Wanda, Ocean Shipping, Peng Ji, Caesar, Huaye and so on! But even the best property has flaws! Not all buildings are managed satisfactorily! Look at the big picture! There is also a state of mind!