... x 20mm x 2.5mm3) Two colors: white and blackAlumina balls,nozzles,substrates have the performances of high purity,good hermetical ... and grinding medium for various ceramic material, α-Al2O3 powder, flake alumina, kaolin, fusible corundum,porcelain enamel,dye,ceramic glaze,dope,printing ... ink,special glass,various ball mill machines. Alumina Ceramic Plate for Hair Straighter