As I came to the Laboratory of Synthetic Leather. I found out the way to differentiate PU (Polyurethane) and PVC (Poly Vnyl Chloride).
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Polyvinyl Chloride PVC
Polyvinyl chloride (PVC) is a major thermoplastic material finding use in a very wide variety of applications and products.
The essential raw materials for PVC are derived from salt and oil. The electrolysis of salt water produces chlorine, which is combined with ethylene, obtained from oil, to form vinyl chloride monomer (VCM). Molecules of [...]

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