grade certificate
Person in charge of this enterprise (legal person, general manager, deputy manager in charge of safety): College degree or above, intermediate title or above. (except the legal representative).
Class b certificate
Person in charge of this project (project manager): Must have a high school education or above, and have the qualification certificate of a first-class builder or a second-class builder.
Class c certificate
Full-time security officer: those who need to have a high school (technical secondary school) or above, or have more than 5 years of work experience (that is, over 23 years old).