Section 10 Pulp of wood or of other fibrous cellulosic material;"Recovered (waste and scrap) paper or paperboard; paper and paperboard and articles thereof 47 Pulp of wood or of other fibrous cellulosic material; recovered (waste and scrap)paper or paperboard 47 07 Recovered (waste and scrap) of paper or paperboard 47 07 10 Unbleached kraft paper or paperboard or of corrugated paper or paperboard Commodity Code Description 47 07 10 00 Unbleached kraft paper or paperboard or of corrugated paper or paperboard