Air China 3,6,7,19,20,64,69,70
China
3,6,7,19,20,69,70: „TEAR OFF“ upside down
- paper
- flat base
- tear off strip
- attached tab
- straight cut
20: small red arrow
7,19,69: medium long arrow
7: plastic tape on base
69: different font of „TEAR OFF“
3: large red arrow
6,70: super large red arrow
6: manufacturer in the right gusset:

64: „TEAR OFF“ not upside-down
- paper
- flat base
- tear off strip
- attached tab
- straight cut