I ran out of TFA Cheesecake Graham Crust but have it in Signature, could I substitute and if so would there be a difference with percentages?
Signature is just ecigexpress’ name for TFA/TPA
7 Likes
FWIW, don’t forget (Fa) Flavor Apprentice. Fa preferred last I checked.
Nicotine River has since fixed that. 
@op
In almost all other cases FA = Flavour Art (which is universally accepted as the correct abbreviation)
3 Likes