Rion Co., Ltd.
Rion Co., Ltd. is a Japanese enterprise specializing in the production, distribution, and upkeep of a diverse range of precision equipment. Their offerings include a comprehensive suite of audiological devices, such as various analog and digital behind-the-ear (BTE) hearing aids, including trimmer digital and waterproof models, alongside ready-made and custom in-the-ear (ITE) devices, and analog body aid instruments. Complementing these are medical apparatus like audiometers and otoacoustic emission (OAE) screeners. The company also provides an array of acoustic and seismic measurement tools, encompassing sound level meters, vibration sensors, seismographs, frequency analysis equipment, microphones, accelerometers, and recording devices. Furthermore, Rion develops advanced particle detection systems, including instruments for airborne, liquid-borne, and viable particle counting. These sophisticated products serve critical applications in sectors such as environmental management, electronics, semiconductor fabrication, the pharmaceutical industry, and food production. Founded in 1944 and headquartered in Kokubunji, Japan, the firm operated under the name Kobayashi-Riken Seisakusho Ltd. until its rebranding as Rion Co., Ltd. in 1960.