In the last years, ecology has become the main subject of worry to the citizens of the developed countries. An important part of this science is the one that refers to the save of energy, unrenewable raw materials and the control of the production and of non biodegradable wastes (saturating them). Plastics and tires are the most important materials of a car which are not systematically recycled. Car industry requires 6,5% of the total consum of plastics in Spain and the group SEAT fabricates 23% of the cars.
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