I'm going to report to my new company, but they told me to bring my old social security bill when I report, but where can I get this form?

They want to link your social insurance.

If you have worked before, you should have participated in social insurance normally. You can go to social security with your ID card to print the old-age insurance payment voucher and medical insurance voucher. The unit can continue to participate in the insurance.

If you haven't worked before. You need to go to the new unit to explain. The unit will increase the number of employees according to the new insurance.