Can count. According to the inquiry of official website, Ministry of Human Resources and Social Security, People's Republic of China, the chemical chief controller refers to the person who operates instruments, computers and other equipment in the general control room, and monitors or adjusts one or more chemical production devices. The fourth grade of chemical general control engineer belongs to the professional title and is the fourth grade of national professional qualification. There are five levels of chemical control workers, primary, intermediate, advanced, technician and senior technician, and the fourth level corresponds to intermediate workers.