Global Polyurethane (PU) Wheels Market By Type (Polyurethane-On-Cast-Iron Wheels, Polyurethane-On-Aluminum Wheels, and Solid Polyurethane Wheels), By Application (Medical Equipment, Escalators/Elevators, Supermarket and Baggage Systems,), By Region and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2019-2028