Tender For repair and maintenance of substation dg sets lifts addressable fas system wet riser system and air conditioners etc in central excise (main and annexxe) building at 121 mg road chennai 34 sh i annual comprehensive maintenance of various type airconditioner etc sh ii annual maintenance contract of fire fighting system at (main and annexxe) building central excise gst bhawan at 121 mg road chennai 34 sh iii annual maintenance contract (non comprehensive) of addresssable firealarming and fire detection system (main and annexe) building central excise gst bhawan 121 mg road chennai 34 sh iv: replacement of defective items of fire fighting firealarm systems materials and supply, installation, testing and commissioning of 2.0 & 1.5 tr split type inverter air coniditoners central excise gst bhawan at 121 mg road chennai 34