Classification Information
SERVICES FOR INSTALLATION AND REPAIR OF TOXIC GAS DETECTION SYSTEMS IN HVAC SYSTEMS AND WITHIN BUILDINGS GENERALLY, INCLUDING SYSTEMS AND APPARATUSES THAT ENABLE OR DISABLE APPLIANCES OR OTHER DEVICES ASSOCIATED WITH INADVERTENT PRODUCTION OR RELEASE OF TOXIC GAS; SERVICES FOR RELATED SYSTEMS AND APPARATUSES INCLUDING INSTALLATION, REPAIR, REPLACEMENT AND UPGRADING OF EQUIPMENT AND DETECTORS.
Electrical and Scientific Apparatus