Pure Saturated Polyester Resin

In today's era, where modern technology and its innumerable boons have revolutionized our lives and made tasks, that were once considered too cumbersome, a walk in the park. But more often than not, the chemical industry takes a backseat, in favor of the more mechanized streams like heavy machinery and tools industry. But imagine for once, would the manufacturing facilities of metals and other heavy tools and products, work if the numerous chemical compounds that are used either as catalysts or reagents, are removed form their respective processes? The answer is a resounding 'No'. Take for example the metallurgy industry. It would be nigh impossible to extract and purify the liquid metal without employing a number of chemicals that act as promoters and impurity absorbents, and bring forth the pure metal.