... 4 color(CMYK)process.Material white paper board, duplex board with white back, copper plate, art paper, C1S FBB board, ivory ... . *We are a professional manufacturer of gift Paper Bag, Paper bag printing ,shopping Paper bag ,Art paper bag ,promotion paper bag and etc ... )Grey cardboard(250gsm,300gsm,350gsm,400gsm)White paper(250gsm,300gsm,350gsm,400gsm)Art paper(128gsm,157gsm,200gsm,250gsm,300gsm)Double ...