... .9kg(including the battery) 4 ceramic materialsindustrial ceramics parts as wearable plungers,cylinder, ceramic knife, grinding ... W: 28.9kg(including the battery) 6 Ceramic insulatorsadvanced ceramics parts with high purity > 99% Al2O3 as insulators, ... wearable elements.industry structure ceramics as plungers, pistons, tubes, rods, rings,platesAlumina purity:90 ...