1. medical institutions: health management (physical examination) centers of medical institutions at all levels, maternal and child health centers, etc., engaged in health file management, health guidance and consultation, health status investigation, health specimen sampling and health affairs management.

2. Health service institutions: including health management companies, nursing centers, psychological consultation institutions, etc., engaged in health care services, health consultation, health guidance, private health maintenance, health information management, health status monitoring, health education and training, etc.

3. Health product production and sales enterprises: In the production of various medical products, sales enterprises are engaged in health product marketing, product consultation, customer service and sales management.

4. Community health assistants at the grassroots level: provide health management services, such as health consultation and health education, to the community or grassroots people.

5. institutions for the aged: provide health management services for the elderly, such as making health plans and conducting health assessments.

6. Commercial health insurance company: engaged in health insurance product design, underwriting and compensation, risk management, etc.

7. Health administrative department and disease prevention and control center: engaged in public health management and disease prevention and control.

8. Enterprises and institutions such as medical associations: engaged in health-related research, education and training.