Acid-Resistant, Antibacterial, Heat Insulation, Non-Slip, Firebrick, W... 1.500x500:3.9 USD/SQM;600X600:3.95USD/SQM 2.water absorption:0.06% 3.glossiness:90-95(with nano) 4.surface flatness:+-0.8 1.Item No.:SH6203A2.Made by porcelain ,so its water absorption is very low ,it is 0.06%. Polished by KEDA polishing machine ,with 54 diamond fickert , make our product's glossiness to reach 90-95.3. ...