... GSM in weight 2. Size :A4, 8.5'*11' ,8.5'*13'/14,A3 3. Brightness:94%-96,98 ... 70gsmWhiteness98-100%, 102-104%Packing500 sheets per ream, 5 reams per carton(box)Load Qty(20ft) A4A3Letter sizeLegal ... , in accordance with international standards, water content 4.5% ~ 5.5%, caused by excessive moisture copy is not clear, ... you r welcome !.!! A4 paper (A4 copy paper;MULTI-PURPOSE PAPER;photograph paper)