electronic rotary switch 1.Passed ISO9001,ISO14001,ISO/TS16949. 2.Rotary life :100000 Cycles 3.Cost-effective We produce rotary shaft encoder , potentiometer and switch 1.Passed ISO9001,ISO14001,ISO/TS16949. 2.Rotary life :100000 cycleWe produce rotary shaft encoder, potentiometer and switch.rotary encoder,potentiometer and switch for musical instruments, audios,medical equipment, Walkie talkie, ...