Global Purified Isophthalic Acid Market By Type (Purity 99% , and Purity 99.5%), By Application (PET Copolymer Resins , Unsaturated Polyester Resins , Alkyd or Polyester Surface Coating Resins , Amorphous Polyamide Resins , and Adhesives), By Region, and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2020-2029