1.Size:A4,,A3,8.5x11 2.Baseweight:80G, 75G,,70G 3.Brightness: 96-110% ... Copy Paper Material100% wood pulpSizeA4, A3, Letter size(8.5x11),Legal size(8.5x14)Base Weight80gsm, 75gsm, 70gsmWhiteness96-98%,100-102%, 102 ... sheets of high quality paper in one standard ream. hot popular !!! thailand a4 copy paper manufacturer