Two Years Operation & Comprehensive Maintenance of Variable Refrigerant Flow (VRF) Indoor and Outdoor Units of Air Conditioning System (AB-1,AB-2,KRC,SH-2,Auditorium), Three Nos. Sewage Treatment Plants (two of 30 Kld Capacity And One of 50 Kld Capacity), Air Conditioning System And Hot Water Generator (feeding G+3 And G+7 Building).