Bottles made of recycled polyethylene terephthalate (PET) can be utilised to create lower grade products like carpets. To make a food-grade plastic, the bottles need to be hydrolysed down to monomers, that are refined and then re-polymerised to make recycled PET.
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Glycerol Production Cost:- https://www.procurementresource.com/production-cost-report-store/glycerol