... process We can offer all kinds of envelopes, paper bags and paper CD sleeves,any sizes, materials, and styles. ... the common 4 colors (CMYK) process3) Material: golden kraft paper, kraft paper, special paper4) Finishes: Foil, Holographic, Embossing,UV ... envelope and so on..Materialoffset paper,Kraft paper, cardboard, special paper, art paper, close-line paper, chipboard, white paper board, etc. Sharp & ...