The company is in Haizhu District. Where should I change my medical insurance card into a social security card? What information do you need to bring?

If you have a company, the colleague in charge of medical insurance in your company will go to the medical insurance bureau to handle the relevant replacement procedures on behalf of the whole company. Generally speaking, you need to provide an old medical insurance card (if you have a passbook, you need to provide a passbook) and an ID card. After all the formalities are completed, the designated bank will make new medical insurance cards for the employees of the whole company. After the production is completed, it will be collected by the relevant person in charge of your unit and distributed to individuals.

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