Are you a member of the company? Or a new employee of the unit?
According to my experience, if the company is registered in Xinhua District, it should go to Xinhua Social Security Bureau. I suggest you call the local social security service number, which should be 12333.
If you are a new employee of the company, just leave these things to the facts, there is no need to bother ~ ~
I hope I can help you ~ ~