... absorption7.Meets American and European standards Fairway Ceramic Knife AdvantagesFairway ceramic knife is made out of very hard ceramic material ... 6 for hardened steel, and 10 for diamond.the blade has high hardness,and wearability is 60 times as much as metal knife ... allergic reaction. After 1600 degres high temperature sintering,the blade is entire compact,non-hole,not-magnetism,non-conductive, ...