Copy Paper 100 GSM PaperOne o Specifications of our A4 100GSM Copy Paper White PaperOne: * Substance / Basic Weight : 100 gsm (ISO 536) * Brightness : 98 (ISO 2470) * whiteness : CIE 167 (ISO 11475) * Thickness : 120 um (ISO 534) * Opacity : 97 (ISO 2471) * Roughness : 60 ml/min * 1 Boxes = 5 Reams * 1Ream : 500 sheet