Railway Overhead Catenary System (OCS) Market – Global Industry Size, Share, Trends, Opportunity, and Forecast, Segmented By Type (Simple Catenary, Stitched Catenary, Compound Catenary), By Application (Metro, Light Rail, High-Speed Rail), By Component (Catenary Wire, Dropper, Insulator, Cantilever, And Other Components), By Material (Copper, Aluminum Alloy, Composite), By Region, By Competition 2