Hello, and welcome! Here at The Vapor Chef we pride ourselves on quality. Not only in our product, but also our service. All of our vegetable glycerin and propylene glycol is USP certified and all our nicotine bases are american made. Our flavor extracts come from reliable safe sources are diacetyl free. We mix all of our juice fresh when you order and ship within 7 business days. We never add any sweeteners, color, water or alcohol to our juice and we don't use WTA extracts.