How is the real estate of 20,000 square meters profitable?

The property has a profit of 20,000 square meters, and the profit of the property management company is equal to the actual property fee income minus the personnel fee minus the material loss minus the welfare tax. The income sources of property enterprises include four aspects: first, public service fee income, usually called property management fee; The second is the service fee income of public institutions; The third is the special service fee income; The fourth is the comprehensive operating income of property enterprises.