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The chemical industry comprises the companies that produce industrial chemicals. Central to the modern world economy, it converts raw materials (oilnatural gasairwatermetals, and minerals) into more than 70,000 different products. Polymers and plastics, especially polyethylenepolypropylenepolyvinyl chloridepolyethylene terephthalatepolystyrene and polycarbonate comprise about 80% of the industry’s output worldwide.
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