How do social security institutions in Mi Dian pay social security by themselves?

You can pay the social security card at the landing point. But it's best not to hand it in. In the future, if you want to transfer or withdraw the provident fund, you can't get proof of buying a house with a loan. They attached us to the human resources company, which has nothing to do with them and can't be helped. I regret it now. Call them and say it's none of their business.