Global Germanium Market By Type (Germanium Tetrachloride, High-Purity Geo2, Germanium Ingot, And Other), By Application (Ir Optics, Fiber Optics, Polyethylene Terephthalate (Pet), Electronic And Solar, And Other), By Region And Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends And Forecast 2019-2028