The name just seems out of place with other juices being given proper names such as Vanilla, coffee, chocolate, etc. The name sounds more like it came from a chemistry lab. Anyone know the story behind the name?
RY4 Is short for Ruyan #4. Ruyan is a Chinese e-cig , e-cigar and e-pipe mfg., and maybe even the inventor of ecigs? RY4 is just the name of an early popular e-liquid formulation that became a sort of standard. It's described as a combination of tobacco, caramel, and vanilla flavors. Every company under the sun has their own take on it, all of them different.
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