... f1 manufacture (factory) ego w 2) OEM, ODM service available 3) CE,ROHS,GS&TU egow ,ego w ,ego-w Basic ... :1.9-2.2ohm,long atomizer lift,large smoking puff 3>No drying burn,never leaking,huge vapor 4>No shaking smoking ... period, we will repaire them or send you new free; 3) If it is the sample or only several PCS accessoires ...