... ,ZL,DL,B6 2.Material:white or kraft paper,70~120gsm 3.0~4C LOGO printed paper envelop: 1) Size: According to clients ... 4 color(CMYK)process 3) Materials: offset paper,Kraft paper, cardboard, special paper, art paper, close-line paper, chipboard, white paper 4) Surface disposal: Glossy/matt lamination ... , pocket envelope, window envelope, gummed envelope, peel and seal envelope kraft paper envelope