During the validity period, the credit line can be recycled. Revolving loan for mobile companies to send mobile phones by phone bills is an activity, and credit lines can be recycled within the validity period. Take revolving loan as an example: the credit period of a loan product is 3 years, and the credit line is 30,000 yuan, so within these 3 years, 30,000 yuan can be borrowed and repaid, and it can continue to be borrowed after the credit line is restored. If it is recycled, it is a revolving loan product.