Materials: 100% pure wood pulp ( featuring super quality ,and super brightness)Brightness: 102%-104%weight: 80gsmInternational standard-A4(210mm*297mm)Technical DataMoisture 3.5%-4.5%,Thickness: 103-110 umSurface roughness TS ml/min: 75-175Surface roughness BS ml/min: 100-200Bending stiffness MD:>110 MnBending stiffness CD:>50 MnOpacity: 95 minCIE whiteness: 167Cobb Test: 27-33 g/m2 27-33Suitable for:Stay flat after copyingLeave no dust in the copy-machineNice appearance-white and cleanNice touch-smooth and bulkyNo see through-print both sidesGuaranteed for trouble-free operation.Capability: High Speed Copying100ppm, LaserCapable: Inkjet Capable, Fax Capable.High performance for both sides printing/copying