Global Polyester Polyols For Elastomers Market By Type (Vacuum Melting Method, Carrier Gas Melting Method, and Azeotropic Vapor Method), By Application (Footwear and Textile, Healthcare Industry, Cable, Automotive, Pipe, Film and Sheet, and Others), By Region, and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2020-2029