Global Industrial Gas Generator Market By Type (20 Kw To 100 Kw, 101 Kw To 500 Kw, 501 Kw To 1 Mw, 1 Mw To 2 Mw, And 2 Mw To 5 Mw), By Application (Chemical Industry, Breeding Industry, Petroleum And Gas Industry, Mining Industry, And Other), By Region And Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends And Forecast 2019-2028