Global Industrial DeNOx Systems Market By Type (Selective Catalytic Reduction, and Selective Non-catalytic Reduction), By Application (Power Plants, Gas Turbines, Waste Incineration Plants, FCC Units in Refineries, Steel Mills, Calcination Plants, Nitric Acid Plants, and Cement Plants), By Region, and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2020-2029