What does Ping An Insurance Company do in Changchun area? How to tell whether there is a compilation? How is the treatment?

Formally compiled, directly signed with Ping An Insurance Company (usually once every three years) is a registered employee of the enterprise, with complete wages and benefits. In general, you won't lose your job unless your place is really bad, so there's nothing to talk about.

Non-staff personnel only have a little basic salary, and the rest are paid by the business. There are no benefits except basic insurance.

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