Sell in parts then (mod, battery, atomizer, wick, coil, pv/vg base, flavouring). Until they are all assembled in a certain way they can't be treated as an "e-cigarette" or "e-liquid". What is sold is just nuts, bolts, o-rings, coils, cotton, battery chargers, skin moisturizers, and cooking flavourings.I think you will find that Much will depend on How the Product is Marketed. And whether or not it is Combined in a "Kit" or Sold with Another "tobacco Product".