The Lean Fuel One Card Management System product focuses on "lean fuel" management, with the ultimate goal of reducing costs and comprehensively improving fuel management efficiency. It provides functions such as fuel planning, contract management, transportation management, measurement management, consumption management, quality supervision management, digital coal yard, blending management, fuel statistics, accounting management, fuel economic analysis, fuel assessment, etc. It establishes a fuel full cost management model, and through fuel closed-loop management, achieves scientific planning, optimization of structure, improvement of coal quality, reduction of coal prices, fine acceptance, reasonable storage, fine use, accurate settlement, effective supervision, and fair assessment, promoting cost reduction and efficiency improvement for enterprises.