Polymethyl methacrylate (PMMA) is more popularly known as acrylic. It is a transparent and rigid thermoplastic. It is produced from the monomer methyl methacrylate. Polymethyl methacrylate is far more durable, easier to make, and less expensive to produce than similar materials. https://www.maximizemarketresearch.com/market-report/global-polymethyl-methacrylate-market/26389/