A4 Papers 80gsm 1.Exact gram,sheets per ream and stable quality ... .ISO 9001-9002 3.Market:Middle East,Southeast Asia. A4 Papers 80gsm Substance:70-80gsmBrightness:90-110% Package:500 sheets/ream ... Weight variationg/m2+/-2Brightness%90-110Thicknessum96-110Smoothnesss>18s Wood A4 Papers 80gsm