... gum, mahogany, walnut, black walnut, grey etc to meet the customers demand. Surface:Burnished(smooth), grooved, serrated, embossing ... : CE Certificate Standard: ISO9001:2000 Technical Data: No.TESTING ITEMUNITSTANDARDRESULT1Densityg/cm³≥0.851.342Water Absorption%≤3.00 ... Heat Cycle-------No checking,No bubbleNo checking,No bubble 7Normal Temperature Balls ImpactAppearancemm≤0.5%0.2 Fence in the garden