... the common 4 color(CMYK)process.3) Materials: white paper board, duplex board with white back, copper plate, art paper, C1S FBB ... printing, magazine printing, periodical printing, catalog, brochure, booklet, poster, label, flyer, leaflet, tagprinting, packaging printing, paper bag printing, card printing, envelop printing, calendars printing, etc.We promise:1.high quality ...