White Back Duplex Paper Board in India is a paperboard with a white surface on one side and a gray surface on the other. It is made of two layers of paper that are glued together. The white surface is usually coated with a layer of clay, which gives it a smooth finish. White Back Duplex Paper Board is used in a variety of applications, including packaging, printing, and stationery. It is a popular choice for many businesses because it is affordable and has a professional appearance.