none. I wouldnt trust even the 'name brand' vapes you can find on there as fake vapes do exist

edit: https://www.amazon.com/Extreme-Q-Aromatic-Botanical-Machine/dp/B08248MPDD/ref=sr_1_1?keywords=arizer+eq&qid=1579820247&sr=8-1

found an EQ, still not sure if I trust it tho