This 3D model precisely restores the C80B open-top gondola wagon, the core heavy-duty freight vehicle exclusively deployed on the Daqin Railway heavy haul coal transportation line.The wagon body adopts a dark gray main body with a bright yellow anti-collision buffer end at one end. The car body is printed with official railway marking text, vehicle number C80B 438 5057, allocation unit (Taiyuan Railway Bureau, Hudong Rolling Stock Depot), and complete technical parameter marks. The cargo hold is filled with simulated coal bulk cargo, matched with standard two-axle bogie running gear and concrete sleeper track foundation.