What does social security transfer mean?

Social security transfer: 1. When leaving the original unit, the social security agency of the insured place will issue the Certificate of Payment of Basic Endowment Insurance. 2. After you re-participate in the insurance payment, the social security agency of the new insured place will issue the "Certificate of Payment of Basic Endowment Insurance" of the original insured place, and fill in a transfer application form. I'll go, or it can be handled by the agent of the new insured unit. 3. After the application, if I meet the transfer conditions, I will wait for the notice of social security, and the rest of the transfer procedures and fund transfer will be contacted by the social security agencies of the receiver and the transferor. 4. After the transfer procedures of both parties are completed, the Social Security Association of the newly insured place will inform you or the handling personnel of your unit.