What are the details of the indicators of the deep household social security base 6000?

The index details of Shenzhen-Shanghai social security base 6000 are as follows

The standard of social security base 6000 is uncertain. Because the social security payment base is mainly based on the individual's occupation and income and their own payment grades.

For example, the salary is 4,000 yuan, and the payment base can range from 2,400 yuan to12,000 yuan. Generally, the minimum payment base of social security for the insured is 40%, the first 60%, the second 80%, the third 100% and the highest 300%.