Tsaron kwal (MA) alamar tana aiki na tsawon shekaru biyar.
Bayan ya kusa karewa, yana da mahimmanci don neman sabuntawa ko shirya sake fitarwa. Dangane da kayayyakin da ake shigowa dasu, Ana samun alamar amincin kwal akan kowane tsari ba tare da ƙayyadaddun ƙarewa ba; ya shafi keɓancewar takamaiman rukunin shigo da kaya.