... "CERAMIC STEEL",used in modern kitchen,has many advantages that metal knife can not compare.1.Not needs ... diamond.the blade has high hardness,and wearability is 60 times as much as metal knife.giving a ... ceramic whetstone. To sharpen the edge of a blade a material harder than the one that is ... reaction. After 1600 degres high temperature sintering,the blade is entire compact,non-hole,not-magnetism,non- ...