- HVAC Piping System Works
- HVAC Duct System Works
- Plumbing System Works
- Fire Sprinkler System Works
- Refrigerant and AC System Works
- Air Gas and Medical Gas System Works
- Insulation and Cladding Works
- Underground Site Utility Works
- Fuel Storage Tank Installation and Distribution Works
- Mechanical Shopdrawing Works
- Material Submittals and Approvals Works
- Material Procurement Works
OMG provides all design and build mechanical activities
