Since 1998, as an ISO 9001: 2000 Certified company, we are a leading manufacturer of high quality anti-wear ceramics in China: Tech. Spec.: 1, Purity of Alumina: 92%, 95%,99%, 2, Density: >3.6g/cm3 3, Moh's hardness: 9, 4, Compressive strength: above 2,000MPa 5, Water absorption: <0.01 6, Crushing strength: >=520kN 7, Shape: Square or Hexagonal . Features: 1,Excellent wear resistance 2,Good impact resistance. 3,Good corrosion resistantce. 4,High hardness 5,Smooth surface. Application: Steel plant, power plant, mines.etc. Welcome to contact Steven: skype:vital-sales5