Global Main Automation Contractor (MAC) Market By Type (ESD(Emergency Shut Down) , SIS(Safety Instrumented System) , PSD(Process Shut Down) , ICSS(Integrated Control & Safety System) , DCS(Distribution Control System) , and Instrumentation), By Application (Oil & Gas , Thermal Power Plant , Manufacturing Industries , Process Engineering , and Other Industries ), By Region, and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2020-2029