CST-Copenhagen Sensor Technology A/S ay isang tagapagbigay ng mga produkto at serbisyo tulad ng radio receiver, fm, domestic,radio receiver, am / fm, domestic,radio receiver, stereophonic,microphones, piezoelectric (kristal),microphones, ceramic,microphones, ultrasonic,microphones, cardioid tugon,microphones, pumipili,microphones, itinuro,loudspeakers, sungay,loudspeakers, mabibigat na tungkulin, at discotheque entablado paggamit,loudspeakers, palawit orbit,laud-ispiker kit, tahanan assembly,loudspeakers, mobile komunikasyon, motor sasakyan,megaphones,laud-ispiker cones,tweeters,woofers,driver (magnetodynamic unit) para sa loudspeakers,headphone, gumagalaw likawin,headphone, cordless,monitor, personal (in-tainga), para sa mga musikero,cassette recorder-player, stereo,graphic equalizers,pasahero address system para sa sasakyang panghimpapawid at mga tren,cassette players, stereo.