Foshan work company must ask to sell social security, can it not be sold?

Enterprises that purchase social security for their employees must have the qualifications of legal persons. If the Guangzhou office doesn't have it, you can't buy social security for employees. And you work in Guangzhou, and the head office helps you insure in Foshan. Any social security dispute must be handled by the local social security department in Foshan where you are insured. As for your social security, the old-age insurance file belongs to Foshan and can be transferred. If medical maternity insurance is to be reimbursed, it must be declared in Foshan, as well as industrial injury insurance and unemployment insurance.

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