Honeywell International is a software-industrial company that invents and commercializes technologies in energy, safety, security, productivity, and global urbanization. It operates through four segments: Aerospace, Honeywell Building Technologies, Performance Materials and Technologies, and Safety and Productivity Solutions. The Aerospace segment supplies propulsion engines, environmental control systems, integrated avionics, electric power systems, data and software applications, management and technical services, and other products and services for aircraft. The Honeywell Building Technologies segment offers software applications for building control and optimization, sensors, switches, control systems and instruments, video surveillance, fire products, and other related solutions. The Performance Materials and Technologies segment develops and manufactures performance chemicals and materials, process technologies, and automation solutions. The Safety and Productivity Solutions segment provides personal protection equipment, gas detection technology, cloud-based notification and emergency messaging, supply chain automation solutions, etc.