... ; 3,Certificate:SGS, FDA,LFGB; 4,ISO. Color handle ceramic knife set, best gift choices for Christmas, Mother's Day and for ... sizeμm<0.6Thermal conductivityW/(m .k)3.0Features: Our ceramic knives are made of ZrO2, the hardness would close to ... not taint food with metallic taste.Factory Advantages: High Quality Products with relevant Test Repots provided, Best Services, ISO Certificate, owned whole ...