... producing and managing concept of specialization2. Have advanced ceramic knife production lines , fully equipped with production lines for ... 3”-7”Polishing--sanding,mirrorBlade material--zirconiaHardness--HV1100-1250Blade color-- white (hot), black, yellow,pinkHandle material-ABS+ ... TPR,wood,ABS, acrylicHandle color—black(hot), red, orange,yellow, green, bule ...