We provide Tender Bidding Support for Operation And Maintenance Of Electrical And Mechanical Installations At G.S.I, Marripalem, Visakhapatnam During 2021-22. Sh- Replacement Of Outlived Conventional Type Fire Alarm Panel With Addressable Type Fire Alarm System I/C Replacement Of Detectors, Mcps, Hooters Etc And Repairs To Wet Riser System I/C Replacement Of First Aid Hose Reels, Hydrants, Leakage Pipe Lines Etc And Replacement Of Conventional Lighting Fixtures With Energy Efficient Led Fixtures.