I got a social security card in Shenzhen in 2008, but I haven't paid it for several years. Now working in Changsha, the company also buys social security. Is my old card useful? ...

Hello! 1, the social security card in Shenzhen is basically useless. Can not enjoy medical insurance, but the pension insurance period and personal account amount exist effectively for a long time. 2. There is no essential contradiction between them. Suggestion: If you don't go back to work in Shenzhen, you can merge Shenzhen social security into a place where you can enjoy retirement benefits in the future. If you haven't decided where to enjoy retirement benefits, you can combine the social security contributions you paid all over the country after reaching the legal retirement age. Shenzhen insurance transfer process: the original ID card can be printed on the self-service insurance transfer machine of the Social Security Bureau, and can be handed over to others without any power of attorney.