Paper:
When waste paper is substituted for wood pulp in papermaking, air pollution and water pollution can be reduced by 75% and 35% respectively;
water and energy can be saved by 60% and 40% respectively. Besides, less waste will be produced.

Metals:
When replacing bauxite by recycled aluminum can in aluminum production, we can reduce the energy consumption by 82%,
at the same time reduce the air pollution, water pollution, and waste by 85%, 80%, and 90%.
When replacing iron mine by recycled iron can in steelmaking, we can reduce the energy consumption by 52%,
at the same time reduce the air pollution, water pollution, and waste by 68%%, 72%, and 95%.

Plastic:
Take PET (water bottles) for example. The use of recycled materials can save 50% energy, as well as reduce 60% air pollution, 20% water pollution, and 90% waste.
"Oil field": 600 kg of petrol and diesel can be refined from 1 ton of waste plastics.

Glass:
The use of recycled materials can save 38% energy, as well as reduce 50% air pollution, 20% water pollution, and 90% waste.

Recycling and reusing waste can reduce pollution and save resources.
0.85 ton of paper can be recycled from 1 ton of waste paper.
0.7 ton of secondary raw materials can be recycled from 1 ton of plastic beverage bottles.
0.9 ton of steel can be recycled from 1 ton of scrap steel.