1.Size:A4,A3,8.5x11,B4 2.weight:80G, 75G, ... .Specifications: multi-purpose copy paperBasic weight70gsm, 75gsm, 80gsmSizeA4, A3, Letter size(8.5x11), Legal size(8.5x13,8 ... dark place, avoid exposing to the place of high temperature, high humidity and sunlight or light irradiate directly;2). ... . Thanks for your understanding and cooperation . Hotsell High Quality a4 Office paper a4 copy paper 80gsm 70gsm