Can social security be linked to other companies?

Not necessarily, we have done it for others (human relatives, not local accounts, can't buy it ourselves). Pay great attention to the formalities. A little carelessness is really risky.

Operation:

1. By keeping the personnel file relationship, the company will sign an agreement with him to purchase social security (the Human Resources and Social Security Bureau has been consulted). The agreement will specify the payment method of social security and the written notice time for stopping the insurance. If the payment deadline of the company is not reached, the company will automatically stop the insurance for him.

2. Social insurance premiums can be collected in advance every year or half a year.

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