It's not true. Organizations that publicize under the banner of outsourcing are all informal education and training institutions. The security officer exam is a formal national vocational qualification exam, which requires formal training. Safety personnel can register in official website, the local housing construction department, and then go to the designated training institutions for education and training. Only after passing the exam can you obtain the safety officer qualification certificate. Although the safety officer has the word "safety" in his name, he is actually the supervisor of production safety. The on-site safety officer is responsible for patrolling and checking the safety status of the construction site, conducting safety education for new workers and supervising the implementation of safety technical disclosure.