... Window; gummed or peel and seal; OEM are welcomed. Envelope, paper CD bag, red packet, kraft envelope as below:1) Size ... as the common 4 colors (CMYK) process3) Material: white offset paper, kraft paper, special paper4) Finishes: Foil, Holographic, Emboss5) With Window, gummed ... and seal.Our minimum order quantity is 5000pcsOEM are welcomed. Paper Lined Envelopes