This is four corner style tray. This structure is a set-up with two parts, the upper is a little bigger than the lower part. Tray box is a basic box type fo folding carton.
Features of packaging box design:
1 The lip cover is on the main face, so the height is relatively small.
2 Tray folding carton is make one board in the middle and fold at γn angle.
3 The corner is sealed or glued by lock.
4 This structure is glued by the joints of the front and the back.