0 4707.90 Recovered ‘waste and scrap’ paper or paperboard, incl. unsorted waste and scrap (excl. waste and scrap of unbleached kraft paper or kraft paperboard, or of corrugated paper or corrugated paperboard, that of paper or paperboard made mainly of bleached chemical pulp not coloured in the mass, that of paper or paperboard made mainly of mechanical pulp, and paper wool) 0 0 0 0