Marketing, customer development and maintenance of related products and cross-selling. Marketing, customer development and maintenance and cross-selling of products related to retail credit business or credit card business. Strengthen the post-loan management and follow-up service of retail credit business and improve asset quality. Marketing cooperation projects, strengthening project monitoring and management. Organize and implement marketing publicity activities to promote the sales of products related to retail credit business. Retail loans refer to loans granted by commercial banks to individuals.