HST or in full Hirose Sensing Technology (approximately /hɪ.roʊ.sɛ/) is a Japanese company specializing in the manufacturing of electric switches and sensors. Hirose Electric Group is the major shareholder.
HST started as the sole Japanese distributor for Cherry in August 1968. In March 1973, a joint venture was started with Cherry Corp. In May 1973, Hirose Cherry Precision (also simply called Hirose Cherry, 「ヒロセチェリー」: "Hirose Cherry") was officially founded. In October 1983, it started sales of the Cherry MX series. 
August 2004 Hirose Cherry Precision changed the company name to HST, named after Hirose Sensing Technology.
Cherry itself referenced to Hirose Cherry as "Cherry Japan".
- Archive.org — 2001 snapshot of Hirose Cherry's website