cht+sorting+of+fruits

=After watching the video fruit sorter from youtube, in the sorting operation, the apples are sorted by its weight and size. From the video "Frumac" Grading and packing equipment for apples, at the beginning i am wondering whether the apples are being washed or waxed?? But i think mostly it is being waxed because the apples look shinny after it. This remind me better peel off the skin when eating apples to remove the wax, i think it is harmful to our health.=