Production method: Tape casting Blade Colors: white or black material: zirconium ceramic Special ... . Pantent technology “tape casting to produce zirconia ceramicproducts” to produce our ceramic knife blade.2. Light weight and efficient, you ... the surface looks nice.4. The inner structure of blade is compact and tight, so it can keep a ... happen. 3",4",5",6",7" high quality zirconia ceramic blade