... & corrosion resistance Market: USA,Europe,Asia About Fengye Zirconium Grinding BallTZP grinding ball:1. Preventing material from contamination ... 50 dyas or depend on customer's request.Fengye Zirconium Grinding Ball Property: ItemUnitInspection ResultsCompositionwt%94.8%ZrO² ... with the traditional grinding media such as alumina balls, zirconium silicate balls, steel balls, agate balls and glass perals, ...