There are many technicians, such as automobile maintenance technicians, electronic technicians, engineering technicians, bricklayers, plumbing technicians, chemical technicians, refrigeration technicians, home appliance maintenance technicians, beauty salons, mechanics, fitters, industry and trade technicians, e-commerce technicians, numerical control technicians and so on. The country now pays more attention to professionals. The simplest thing is that the technician's salary is so high, and it is not difficult for senior technicians (to pass the corresponding grade examination). Junior technician, intermediate technician, senior technician, senior technician (technician lecturer). I am now a senior trade union examination technician.