our comany covers a total area of about 20,000 square meters, is one of the biggest manufacture of ceramic knife,which hv several years experience in this industry ,our products hv been certified by the FDA & LFGB,so the quality deserve to be trusted. 1. It is made of nano-grade zirconia powder, fine ground after long-time high-temperature calcined. 3 Its hardness is almost same with those of diamond,and wearibility is 60 times as much as steel,moreover, it is anti-corrosion. 3It is non-toxic,keep food fresh and tasty. Not slabby,easy to clean.. Sharp edge will stand sharp for a long time.