Cutbacks are divided into three classification: Slow Curing (SC) SC-70 SC-250 SC-800 SC-3000, Medium Curing (MC) MC-30 MC-70 MC-250 MC-800 MC-3000, Rapid Curing (RC) RC-70 RC-250 RC-800 RC-3000.
Medium-Curing (MC) : MC cutbacks are prepared by solving bitumen in kerosene which evaporates more slowly than gasoline.