KuCoil is a microporous ceramic coil jointly developed with the Chinese Academy of Sciences. The porosity is about 50%. It is a food-grade ceramic material without any peculiar smell, ensuring the best taste and reduction. and it uses our internally developed 4th generation ceramic formulation to achieve unprecedented coil porosity levels (CPI). The thickest and sauciest oils can easily permeate into the honey-comb like pores of the ceramic and diffuses into a delicate tasting vapor.