... Weight80gsm, 75gsm, 70gsmWhiteness94-96%, 98-100%, 102-104%Packing500 sheets per ream, 5 reams per carton(box)Load Qty(20ft ... advantages:1) Good paper feed function, the precise humidity control in production process, ensure that paper on the copy process keep it neat ... , reduce the jam phenomenon happens. 2) When copy clear lifelike, paper smooth, in favour of the original tonal perfect transfer, make ...