4:

Spring Airlines 4,5,6

China

 

4: oval "O"

paper bag

open gussets

tear off strip

straight cut

 

5:

paper bag

open gussets

tear off strip

straight cut

 

6:

paper bag

open gussets

tear off strip

straight cut

 

7: different  oval "O"

paper bag

open gussets

tear off strip

straight cut

 

5:

6:large distance plane --> text                                   7: