Which three systems does the three-system certification refer to?

Quality management system certification, environmental management system certification, occupational health and safety management system.

1, quality management system certification: mainly focuses on the quality management of enterprises, including product design, production, sales and after-sales service.

2, environmental management system certification: mainly concerned about the environmental protection of enterprises, including the impact of production processes, products and services on the environment.

3. Occupational health and safety management system certification: mainly concerned with the occupational health and safety management of enterprises, including the impact of production processes, products and services on the health and safety of employees.