Where can I open a social security invoice in Gansu?

Tax department window or social insurance online service platform. Social security payment invoice is a kind of voucher for social security payment. Generally speaking, it refers to the payment receipt and payment list of endowment insurance, medical insurance, unemployment insurance, work injury insurance and maternity insurance. Invoicing can be done under the window line of the tax department, or self-service printing can be done on the social insurance online service platform.