Leak detectors in the nature of smoke-emitting pellets for detecting air or gas leaks in HVAC systems, ventilation systems, air ducts, plumbing systems, pipelines, hoses, and industrial enclosure equipment in the nature of air circulation and containment systems for greenhouses and controlled environments

Air purification units; Air purifiers; Air purifying apparatus and machines; Air purifying units for commercial, domestic and industrial use; Household air cleaners; Industrial air purifiers