Packaging & Delivery Packaging Detail: carton Delivery Detail: 20 days Specifications 1,industrial ceramic 2.material:75% Al2O3,90%Al2o3.95%Al2o3,96%Al2o3,99%Al2o3,99.5%Al2O3 or steatite or zirconia industrial ceramic 1. material:75% Al2O3,90%Al2o3.95%Al2o3,96%Al2o3,99%Al2o3,99.5%Al2O3 or zirconia. 2.Surface finish:    a)Normal polish Ra 0.8-1.0m    b) Fine polish Ra 0.4-0.6m     c) Diamond polish Ra 0.2m   3.Specifications:    a)wear-resistant     b)anti-high temperature     c)mechanical seals good     d)anti-corrosion     e)anti-friction