Hello, there are two kinds of health certificates, one is for general industries, the other is for catering and public service industries, and the latter is more strict. There are blood tests, but syphilis and AIDS are not checked. Blood tests are mainly aimed at liver biochemical tests, mainly hepatitis B, chest X-rays, stool tests, and so on.

Several checks of health certificate are mainly aimed at:

internal medicine

Chest x-rays are mainly aimed at tuberculosis.

The stool examination is mainly aimed at intestinal bacteria and typhoid infection.

Blood is mainly the examination of liver biochemical indexes, aiming at hepatitis B.