Research Report on Digital Marketing of Long-Tail Customer Groups in Commercial Banks Under the Background of Economic Downturn: A Case Study of Pudong Development Bank Daxing Sub-branch. Digital-Intelligent Economy and Scientific Management, [S. l.], v. 1, n. 2, p. 11–37, 2026. DOI: 10.71204/tkkhyk97. Disponível em: https://diesm.cscholar.com/article/view/1000317. Acesso em: 4 mar. 2026.