... the service life; 2, the print is not curled;A2 engineering copy paper 1, no absorption of dust, no jams, effectively ... long time to read the eyes do not fatigue;6, high-quality products and harmonious environment.Whiteness: from 96 to 10680gsm ... quality ,and super brightness),2.106%-108% brightness ( high super quality ,and high super brightness),Substance:70 \75 \80 GSM Company Name ...