... and switch. Passed ISO9001,ISO14001,ISO/TS16949. for MARCOS car :We produce rotary encoder, potentiometer ... for musical instruments, audios,medical equipment, Walkie talkie,DVD,GPS navigation,toys ,automotive accessories (car amplifiers) Volume Control ,interphone,sport equipment communication ... household appliances.High quality, long rotary life For VOLKSWAGEN,TOYOTA,HONDA SONY,TCL.etcPassed ISO9001, ...