Usar "polyurethane" en una oración

1. Some years ago, when I was a production manager at a polyurethane plant, the president of the company decided that we needed another order expeditor

2. He went on to buy wood glue, golden oak stain and polyurethane varnish for the proposed repair of the computer table

3. The bar was made of pure mahogany, coated in high-gloss polyurethane

4. The most common and potentially lethal types of man-made or synthetic materials and the toxic fumes that they give off are: polyurethane foam (often used in furniture), cyanides including hydrogen cyanide, PVC (used to cover electrical wires and in plastic goods), and hydrogen chloride