Mitsubishi Electric, Carrier: HVAC diagnostics, AC optimization, and system retrofitting.
ABB, Eaton: Electrical system testing, UPS inspection, and fire panel maintenance for office complexes.
KONE, Otis: Vertical mobility servicing including elevator recalibration and escalator control system tuning.
HealthCare Labs: HVAC filters and cleanroom ventilation solutions for pharma-grade laboratories.