Does the second-level construction engineer rely on social security to pay or not?

I want to buy social security, and now my company has to transfer. If it is affiliated with social security, the social security should be handed over to the constructor of the unit where it belongs when applying for personal materials to prove unilateral labor relations. In the process of affiliated registration, if the secondary construction engineer is willing to transfer the insurance to the affiliated unit, he can directly handle the insurance transfer formalities in the original unit and the affiliated unit. 700