1. Professional services provided by consulting companies: Consultants of consulting companies can provide professional consulting services for enterprises and are an indispensable part of the tertiary industry.
2. The income of consulting companies mainly comes from the fees paid by enterprises: the services of consulting companies are paid, and enterprises need to pay the corresponding consulting fees to obtain the services of consulting companies. This form of commercial service is also a typical feature of the commercial service industry in the tertiary industry.