Operation & Comprehensive Maintenance Contract For 3 YEARS of Existing Total 169 TR at BALVANTRAY MUNI. HALL ( 98 ton H. V. A. C. System ) & ( 2 ) LALAKAKA MUNI. HALL ( 71 ton H. V. A. C. System ) & MISCELLENEOUS WORK ( As & Where Require ) in Both Hall During Comprehensive Maintenance Contract Period.