... and switch. Passed ISO9001,ISO14001,ISO/TS16949. Antenna for Mobile phone: We produce rotary encoder, potentiometer and switch.rotary ... encoder,potentiometer and switch for musical instruments, audios,medical equipment, Walkie talkie,DVD ... and household appliances.High quality, long rotary life For VOLKSWAGEN,TOYOTA,HONDA SONY,TCL.etcPassed ISO9001,ISO14001,ISO ...