Tender For repair and maintenance of substation, dg sets, lifts, addressable fas system, wet riser system and air conditioners etc., in central excise (main & annexe) building at 12, mg road, chennai.subwork/packages:sitc of non clog submersible sewage pumpset, replacement of old wornout/obsolete pump motor control panel with new panel, servicing of 03 nos vcb, i/c energy efficient led fittings along with allied works