The curved atom clip is affixed to the front and back of the document to be bound, and is better than the curved foot atom clip used to insert the slot of the press paper.
If you want to wrap the corner, you need to add a square cover or kraft paper on the left side of the first cover of the voucher, the size of this rectangular paper is not too large, the length is shorter than the length of the voucher, about 60% of the length of the voucher.
After the first eye, fold diagonally to the left in the position of the first eye. The owner of the building can refer to the position of the bag corner of the binding certificate before folding. After folding, compare the thickness of the entire document and cut it twice horizontally and vertically.