... MOQ:100PCS Precision Zirconia Ceramic Ball Material:zirconia ceramicExcellent features :1.Material:zirconia graulation2.Using many fine technology ... acid,alkali,steam,non-lubricated environments.5.Preventing material from contamination because of its extreme low ... textiles,printing and dyeing,pigment and other industries.Material properties: Compositionwt%94%ZrO2,5Y2O3Specific densityg/cm3≥6.0Hardness ...