This is the specification of paper we are supplying you:International size A4.Quality: Imported 100% wood pulp (Super quality, and super brightness)Sheet Size:210mm x 297mm, International Size A4Whiteness = 102-104%,Natural WhiteCapability: High Speed Copying100ppm, LaserCapable,Inkjet Capable, Fax Capable.No jam in copy machineISO certified.