What kind of class is the company in Daning District of Shanghai?

I would like to ask what kind of class it is to work in a company in Daning District, Shanghai. National staff. According to the inquiry information, Shanghai Daning Asset Management Co., Ltd. was established in May 2008. It is a key state-owned enterprise in Jing 'an District, and the employees working in state-owned enterprises belong to the national staff class.