What is the difference between the first, second and third class of Shenzhen social security card?

It is recommended to choose the comprehensive medical care medical insurance First class, although the first class payment rate and cost is higher, because in the hospital selection, reimbursement scope, outpatient and hospitalization treatment is more advantageous. According to the "Shenzhen Social Medical Insurance Measures" Article 7, the employer should participate in the basic medical insurance for its municipal workers in the first class, for its non-municipal workers in the basic medical insurance in the first class, second class, third class, choose a form of participation.