Maintenance package for the utility system.
   Air condition system
         • Chiller
         • Air Condition
         • Cooling Tower
         • Air Handling unit
   Ventilation system
         • Ventilation Fan (Axial, Centrifugal, Roof, Ceiling)
   Plumbing system
         • Centrifugal pump
         • Deep well pump
         • Sanitary
         • Waste water treatment
   Others
         • Air Compressor
         • Air treatment system
         • Electrical
         • Freight Elevator