Tongji Science and Technology Building, Guokang Road, Yangpu District, Shanghai. In 2022, Shanghai food safety abc levy exam registration for Shanghai Yangpu District Guokang Road Tongji Science and Technology Building, such as transportation inconvenience can also be taken online registration. China's food will be in accordance with the risk of grading management risk from low to high into A, B, C, D4 levels, the risk level A food operators in principle at least once a year supervision and inspection.