Global Tungsten Electrode Market By Type (Pure Tungsten, Thoriated Tungsten, Lanthanum Tungsten, Cerium Tungsten, and Yttrium Tungsten), By Application (TIG Welding, Plasma Welding, Cutting, and Thermal Spray), By Region, and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2019-2028