10,11,12,18:

Vietnam Airlines 2,4,5,12,18,(10,11)

Vietnam

 

paper bag

flat base

vertical tab

manufacturer in the left:

2

4

5

12

 10: no manufacturer

manufacturer in the right:

11

straight cut

 

18:

super glossy paper bag

flat base

vertical tab

straight cut

2,4,5:

2,4,5: