The model quantity is not what we are chasing for, on the other hand, premium quality, bold adaptive range and targeted/tailored service are what we make our customers success:

Premium quality is based on food-level material,ceramic coil,and fine workmanship 

Bold adaptive ranges are embodied with various tank volumes:0.5 ml, 1 ml, and 2 ml. 

Targeted/tailored service are grounded with our professional staff:e.g we have different air hole diameter to fit to oils of different viscosity.