Global Gas insulated switchgear Market Size study, by Type (High voltage gas insulated switchgear and Medium voltage gas insulated switchgear), Voltage (Distribution voltage, sub transmission voltage, high voltage, extra-high voltage and ultra-high voltage), by technology (Hybrid switchgear, integrated three phases and compact gas insulated switchgear), End-users (Power transmission utility, power generation utility, power distribution utility, infrastructure and transportation and Industry & OE