Weixiang, D. G.; Qiaoran, L.; Mengfei, D. X. From Upward Career-Development Signals to Employee Loyalty: The Mediating Roles of Promotion Opportunity Fairness and Organisational Support Under Resource Concentration in Chinese Private Firms. Glob. J. Educ. Financ. Manag 2026, 2 (07), 231-250. https://doi.org/10.65150/EP-gjefm/V2E7/2026-04.