Paper Bag : 1, Rigid Material 2, Strict quality control procedure 3. Timely delivery Strong Art Paper Bag in 4 Color Printing with ... the common CMYK process.3) Material:White cardboard, duplex grey paper, offset paper, C2S art paper, C1S art paper ,kraft paper, special paper ... productscontaining this/these marks.Welcome to visit our factory Strong Art Paper Bag in 4 Color Printing with Robe Handle