Global 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 2020-2029