Detail of double a copy paper a4 80gsm 102-104%:- brand: double a (original)- size: a4 (210mm x 297mm)- substance: 80gsm- brightness: 102-104% above- color: white- whiteness: cie167- grade: all purpose premium paper- sheet in ream: 500- roughness: 140mlmin- roughness: 140mlmin- thickness: 110um- opacity: 95%- ream box: 5 ream- quality: very high key performance- no jam in photocopy machines- no double feed- stay flat after copying (even in laser)- leave no dust in the copy machine- white and clean, smooth and bulky- no see through pring in both side- best result in photocopy machines, laser printers, inkjet printer, fax, etc. excllent performance due to the following characteristics:-moisture control - makes the sheets stay flat in the copier and enchances runability-low dust content - minimizing your copier runing cost.-good opacity - double sided copying of the best quality-smoothness _ improving printing quality.-bulky sheet - enhancing smooth runnability