HORIBA is a company manufacturing and selling automotive test, process and environmental, medical-diagnostics, semiconductor, and scientific instruments and systems. The Automotive Test Systems segment offers emission measurement systems, driveline test systems, automotive emissions analyzers, engine test and brake test systems, and fuel cell and battery test systems; provides vehicle development engineering and testing engineering services; and leases and manages R&D facilities. The Process & Environmental Instruments & Systems segment provides stack gas analyzers, industrial water quality analyzers, water quality analysis and examination systems, air pollution analyzers, environmental radiation monitors, and process measurement equipment. The Medical-Diagnostic Instruments & Systems segment offers hematology and CRP, immunology, clinical chemistry, and blood glucose analyzers. The Semiconductor Instruments & Systems segment provides mass flow controllers, chemical concentration monitors, reticle/mask particle detection systems, residual gas analyzers, and vaporizers. The Scientific Instruments & Systems segment offers Raman spectrometers, pH meters, particle-size distribution analyzers, X-Ray fluorescence analyzers, elemental analyzers, fluorescence spectroscopy/fluorescence lifetime spectroscopy, optical components, spectrometers and detectors, and gratings.