Chengdu Construction Bank handles social security card.

You have not registered a social security card. What did you get? Take your ID card to register with the local social security cooperation bank. Only after registration will you receive it after production. (All five state-owned banks handle it)

It doesn't need to be as complicated as others say. As long as you are the insured payer, as long as you have an ID card and as long as you are a bank that cooperates with local social security, you can call up your personal social security information. Once registered, you will enter the social security information terminal, and the social security is clear.

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