- Maxi-Signal Products
 - La Grange - Providing audible and visual signals, strobes, and other lighting and safety equipment. - National Fire Sprinkler Association - Northern Illinois Chapter
- Chicago - Dedicated to educating and informing the Chicago area public of the vital role fire sprinkler systems play in fire protection.
- National Fireproofing Company
- Seneca - Specialises in distributing and applying fire retardant products for commercial and residential applications.
- System Sensor
- Saint Charles - Manufacturer of commercial fire detection and prevention equipment.
- Telcom & Data
- Chicago - Crisis management system that provides emergency collaboration and emergency notification for accurate, real time, information and quick resolution.
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