... of enterprise credit grade 3/.Not rust 4/.Healthy,Safety,Hygienic Detailed Product Description MaterialCeramicCeramic TypeCeramic knifeCertificationSGS,ISO 9001 ... scale of mineral hardness, compared to 6 for hardened steel, and 10 for diamond.the blade has high hardness,and ... best culinary tool for slicing and cutting through boneless meat,vegetables and fruits etc..3.Healthy,Safety,Hygienic:This modern ...