Advantages: ² Ultra-sharp long life blades. Last many months or years without sharpening. ² High hardness, high resistance to wear. Its wear resistance is 60 times of ordinary steel knives. ² Dust-proof and stain-proof. Non-stick surface makes the ceramic blades easy to clean. ² Chemically inert. No metallic taste or smell. No interaction with any food. Keep the food in its original color and flavor. ² Easy to use, Lightweight and excellent balance makes it a pleasure to use. Attentions: ² Using of cutting board: wooden or plastic, no stone. ² Handling of items: vegetables, fruits or meat; in order to avoid damaged, .please avoid to chopping. ² Cleaning of items: water and detergent should be ok, and please do not put items into dishwasher; moreover, it should be better to protect items in the box. ² Please keep far away from children due to items sharp blade. ² Please do not use the traditional knife sharpener.