Paper can be recycled and reused several times. When its life cycle ends, paper is used as fuel to produce energy. Paper recycling involves several products from paper in rolls and cardboard. About 95% of the paper waste fibre is transformed into new paper. Paper is selected first to separate the recyclable part from the impure part. Then the paper is pressed and bound in bales before being shredded. Then it is bleached to eliminate ink. It is reduced into pulp with the addition of hot water. Refining removes the cellulose pulp. Finally, new cellulose is added to create new life as paper for use.