Cangzhou CDC can't call in.

Cangzhou CDC: 0317-5501918.

1, because 12320 is aimed at the people of the whole country, and there are too many people serving, so naturally there are more people calling.

It is normal that you can't get through or no one answers the phone. Just call a few more times.

2. If you can't get through all the time, it is recommended to check whether the dialing method is correct.

3. There is also to check whether there is a signal check and whether your mobile phone can be used normally.