bids are invited for upgradation of conference hall of vts directorate gandhidham---reputed brand86 inch optical interactive led display , reputed brand wireless chairmen microphone unit , reputed brand wireless delegate microphone units , reputed brand wireless conference system controller , roof or wall mounted speaker of reputed brand , reputed brand mixer amplifier , reputed brand wireless dual handheld microphone , supporting cables and connectors , equipment rack 12u , reputed brand wooden podium , reputed brand wireless microphone for podium alongwith collar mike , reputed brand podium microphone stand total quantity : 30