As a leading Chinese EPC contractor and supplier of high voltage transmission projects in the world from China, we are now promoting our mobile substation; please provide your technical data schedule form as the form which you can download here. they usually are consisted of power transformer, current transformer, high voltage switchgear, surge arrester, Medium Voltage Switchgear, Disconnector, voltage transformer, Grounding Transformer, Surge Arresters, Expulsion fuse cutout, Trailer, Control, protection and metering panel, Mandatory Spares: SF6 gas, Gas refilling unit.