Is it necessary to switch from low-income insurance to high-income insurance in Ningbo?

This is necessary. It is necessary to transfer the low-income insurance paid by Ningbo to high-income insurance. Because the policy of paying social security is to pay more for a long time, the longer the payment period from low-grade to mid-grade social security, the higher the pension benefits after retirement. Social security generally refers to social insurance. 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.