After placing the workpiece on the trolley, you must confirm whether the workpiece is placed in the trolley to avoid the risk of the workpiece falling and injuring people or the workpiece colliding.
After placing the workpiece on the trolley, it is necessary to confirm whether the workpiece is indeed placed inside the trolley to avoid the risk of falling and injuring personnel or colliding with the workpiece
After placing the workpiece on the trolley, it is necessary to confirm whether the workpiece is actually placed in the trolley, so as to avoid the risk that the workpiece falls and hurts people or the workpiece collides.