Where can I handle the closure of the personal social security office?

If the social security is not paid by the company in Yangzhou, you need to handle it yourself, or you can entrust your relatives and friends to handle it. You'd better prepare a power of attorney. For specific materials, please consult Yangzhou Social Security Center 05 14- 12333. Similarly, you can call Lanzhou Social Security at 093 1- 12333, and the staff will give you a detailed answer first.

Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.