Why did Social Security detain 30 yuan?

30 yuan will be deducted from the social security card, and the fee for opening the social security card will be deducted. Social insurance refers to a social and economic system that provides income or compensation for people who lose their ability to work, are temporarily unemployed or suffer losses due to health reasons. The main items of social insurance include endowment insurance, medical insurance, unemployment insurance, industrial injury insurance and maternity insurance. Social insurance has the following characteristics:

1. The objective basis of social insurance is the risks existing in the labor field, and the object of insurance is the individual workers;

2. The subject of social insurance is specific. Including workers (including their relatives) and employers;

3. Social insurance is compulsory;

4. The purpose of social insurance is to maintain the reproduction of labor force;

5. The insurance fund comes from the payment and financial support of employers and workers. Insurance coverage is limited to employees, excluding other social members. The insurance coverage is limited to all kinds of risks in labor risks, excluding other risks such as property and economy.