Industrial gas leak alarm systems subcategory for detecting and alerting combustible gases, toxic gases, and oxygen deficiency in manufacturing facilities. Handles fixed and portable detectors, multi-gas detectors, gas detection tubes, and alarm control panels specialized for detecting hazardous gases such as hydrogen, methane, ammonia, hydrogen sulfide, and carbon monoxide in factories, plants, and chemical facilities. Manufacturing-specific equipment compliant with Occupational Safety and Health Act and High Pressure Gas Safety Act, featuring lower explosive limit (LEL) detection, ppm concentration measurement, and oxygen concentration monitoring functions. Distinguished from residential gas alarms and simple smoke detectors for general buildings, limited to industrial applications supporting continuous monitoring of industrial process gases and emergency shutdown interlocking.