What are the four systems?

1. Quality management system refers to the management system that commands and controls the organization in terms of quality. Quality management system is a systematic quality management model established within an organization, which is necessary to achieve quality objectives and is a strategic decision of the organization.

2. The environmental management system is a part of the management system of enterprises or other organizations, which is used to formulate and implement their environmental policies and manage their environmental factors, including the organizational structure, planned activities, responsibilities, practices, procedures, processes and resources required for formulating, implementing, realizing, evaluating and maintaining environmental policies;

3. Food safety management system (FSMS) is one of the standards of food safety management system.

With the development of economic globalization and the improvement of social civilization, people pay more and more attention to food safety. Require organizations that produce, manage and supply food to prove that they have the ability to control food safety hazards and those factors that affect food safety;

4. The occupational health and safety management system is a modern safety production management mode that rose internationally in the late 1980s. Together with ISO9000 and ISO 14000, it is called "management method in post-industrial era".

The main reason for the occupational health and safety management system is the need of the enterprise's own development.