Global PE-RT (Polyethylene of Raised Temperature Resistance) Market By Type (Ethylene-Octene , Ethylene-Hexene , and Ethylene-Butene), By Application (Under-floor and Wall Heating & Cooling , Plumbing & Drinking Water Supply , and Industrial Pipes and Fittings), By Region and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2019–2028