Carbon dioxide detectors; Carbon monoxide detectors; Electronic slag detectors for use in the metal smelting and steelmaking process; Fire alarm and emergency evacuation devices, namely, fire alarm control panels, smoke detectors, heat detectors, alarm pull stations, audible and visible notification appliances, strobes, sirens, bells, horns, and speakers; Fire blankets and fire extinguishers; Fire resistant gloves; Fire and smoke detectors; Flue gas analyzers; Infrared detectors; Metal detect...