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Danmarks Eksport- og Investeringsfond (EIFO) is a venture capital subsidiary of Government of Denmark and founded in 1992. The firm is headquartered in Hellerup, Denmark.

Infineon Technologies Denmark ApS provides amplifier technology solutions for audio products. The firm creates audio amplifier solutions that maximize output power, audio performance and design freedom. It develops compact integrated circuit audio amplifier solutions for use in consumer electronics and eximo amplifiers feature a power stage topology with more, but smaller, power transistors to create the amplified output. The company's product can be used in wireless or docking speakers, sound bars, home theater systems and stereo systems. It was founded by Hans Kristian Hasselby-Andersen and Mikkel Høyerby on March 22, 2010 and is headquartered in Herlev, Denmark.

Sonion A/S design and manufactures micro-acoustic and micro-mechanical components for hearing instruments, in-ear earphones and earphones. The firm offers products such as receivers, microphones, noise cancelling microphone, boom microphones, vibration sensors, active telecoils, passive telecoils, bone conduction vibrator, volume controls, switches, connector systems, trimmers, faceplates, tapers, and socketm, combination units and sonion sound dampers. The company was founded by Jorgen Weber Jensen and Jens-Jorn Stockholm in 1974 and is headquartered in Roskilde, Denmark.

Hitachi Europe Ltd. manufactures automotive parts, home appliances, and industrial products. Its industrial and manufacturing segment produces air conditioning systems, heavy construction equipment, industrial controls, power generation equipment, and semiconductors. The company's information technology segment offers networking equipment, displays and data storage systems. Hitachi Europe also manufactures home appliances such as DVD players, televisions, vacuum cleaners, and power tools. It was founded in 1988 and is headquartered in Maidenhead, UK.

EMS Brüel & Kjær Holdings Pty Ltd. engages in the provision of environmental monitoring consulting services. It offers EMU, noise loggers, noise and vibration monitoring terminals, Predictor-LimA, acoustic determinator. Its services include AirTrak emissions, airport noise monitoring, flight tracking and procedures, dust and air quality monitoring, NoiseDesk, calibration and verification, and community engagement. The firm serves the airports, cities, construction, energy and utilities, mining and exploration, and transportation sectors. The company is headquartered in Melbourne, Australia.