What does 56s health certificate mean?

Health certificate refers to the proof of preventive health examination, which proves that the examinee has the health quality to engage in the prescribed business. Health certificates are divided into five categories. Class A refers to the physical examination of employees in catering industry, food industry, restaurants and water dispensers. Class B is the physical examination of employees in tourism, culture, beauty salons, cosmetics and other industries. Class C is a general physical examination for general recruitment of factory workers. Class D is the physical examination of electrician, elevator worker, boiler worker and aerial worker. Annual physical examination of class E drivers.