... JH4A1-P02,JH5A1-P02,JH6A1-P02Model: 3", 4", 5", 6", 7" ceramic knife A seriesBlade Material: zirconium dioxide ( ... a longer lasting cutting than other traditional steel knife.Hygiene: no smell or oxidation on the ... surface. Never rusts and will not taint food with metallic taste. Factory Advantages: ISO Certificate, ... air, express, etc.The express companies we worked with are DHL, FedEx, UPS, TNT, and so ...