How to handle the social security window of floating personnel

You can transfer to the corresponding unit. There is no difference between the social security handled by the mobile window and that handled by the unit. The only difference is that if the unit pays social security, it only pays 8% of the social security salary. And I have to pay 20% of the social wage for social security in my personal capacity.

Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.