When can I see the customs health declaration code?

You can watch it anytime. Customs health declaration code is a health code that needs to be checked when going to other countries or entering or leaving the country. This health code can be read at any time. People's Republic of China (PRC) Customs, hereinafter referred to as China Customs. It is the national customs supervision and administration organ, which manages customs in a unified way and implements a vertical management system. /kloc-0 was formally established on October 25th.1949 10.