... Rotary encoder potentiometer switch forcar dvd and car audio 1 high quality 2 Passed ISO9001,ISO14001,ISO ... /TS16949 Rotary encoder potentiometer switch for car audio We produce rotary encoder, potentiometer and switch.rotary ... Walkie talkie,DVD,GPS navigation,toys ,automotive accessories (car amplifiers) Volume Control ,interphone,sport equipment communication equipment, computer / ...