Samsung chef's clothing is the level before the chef's professional qualification certificate, that is, five to one. Chef level 3 is now called Chef China, and he is already a chef. With the third-class certificate, he can apply for jobs in four business hotels. Chef's professional qualification is divided into five grades, the fifth grade is low and the first grade is high. They are level five (junior chef), level four (intermediate chef), level three (senior chef), level two (technician) and level one (senior technician).