our GTT ceramics knife is applying "tape casting" method. Comparing to the main methods compating and injection, tape casting produces ceramic knife with many advantages. Knife surface avoids second process of polishing, so that the surface would not be damaged, keeping the best flexibility and jade look; tape casting will keep the inner molecule arrangement uniform, molecule is even in each part of knife, which enhanced the flexibility of the knife. Thus you will find GTT ceramics knife can bear higher drop test, and the surface looks very good. Besides, we can produce nonstandard shape knives for your unique usuage. Materials: zirconia ceramic blade with ABS handle Technology: Tape casting Blade Colors: white or black ceramic in pristine or matt finish Size: 6" for blade Packing: 1pc/window color box, 63pcs/carton, carton size: 54x39.8x27.5cm Supply capacity: 200,000pcs per month certificate: FDA(we can also apply for other certificates for different country) Resharpening status: zirconia is very hard material which is only less harder than diamond, home-use sharpener for ceramic knife is not available in the market, but the sharpness of ceramic knife can last for several years, no need to sharpen regularly. Advantages of GTT ceramic knife: SHARP, HEALTHY, FLEXIBLE, EFFICIENT, RUSTLESS -Never leave any metallic taste or smell on your food -Retain a cutting edge far longer than forged metal knives -Keep effecient without re-sharpening for years -Easy to be cleaned by rinsing in water -Improve your culinary experiences SPECIAL NOTES: This knife should not be used for ANY kind of twisting or prising. Do not use on frozen foods or meat with bone. Athough GTT ceramic knife is more flexible and can bear higher drop test, but please avoid dropping for your safety.