In the paper, the authors ackowledge that:
It is beneficial to make sure the nicotine liquid you buy is made of quality ingredients and under strictly controlled conditions. If you buy the cheapest e-liquid, you will get the cheapest e-liquid. Most reputable nicotine liquid suppliers will explain what is in their nicotine liquid and what conditions their e-juice is mixed under.
LAST:2014 new products express alibaba kamry ecig k1000 mod kamry v2 ecigarette ecig made in china wholesale |NEXT:most Safe & Safe & Health Electronic Cigarette electronic cigarette starter kit igo w