Tender For maintenance of electrical installation & repair maintenance of pump sets for main building of bhasha bhawan, national library complex, kolkata, repair maintenance of of sound reinforcement system audio visual system, stage light system i/c its all accessories and auditorium light in auditorium & green room light etc. and also operation and maintenance of digital conference system, audio visual system in conference room at bhasha bhawan, national library complex, kolkata during 2025-26 (sh: replacement of 8 nos. 40 watt led post top light at main auditorium entrance and allied works at national library complex, kolkata).