What does Tianjin factory social security mean?

Employee social security includes endowment insurance: the unit pays 20% per month and 8% by itself; Medical insurance: the unit pays 9% per month and 2% by itself; Unemployment insurance: the unit pays 2% per month, and I1%; Work-related injury insurance: the unit pays 0.4% every month, and does not pay a penny; There is also maternity insurance: the unit pays 0.7% per month and pays a penny.