圜达-Diptronics
圜达实业股份有限公司创立於 1985年，专业研发制造各项程式开关、触动开关，更逐渐延伸到其它精密开关产品，如：滑动开关、侦测开关及旋转开关等。凭藉著持续累积的研发实力、生产技术及市场行销经验，圜达公司坚持提供给客户优良的品质、快速的交期和专业的技术支援与服务。
旋转开关
R7
Features: Rotary 7x7
No. Of Poles: 10,16
RJ
Features: Rotary 7x7
No. Of Poles: 10,16
R(H)(V)(M)(S)
Features: Rotary 10x10
No. Of Poles: 10,16
SV3A-4
Features: Rotary 10x10
No. Of Poles: 4
KRB
Features: Cap Accessories for RB
No. Of Step: Short / Long Spindle & Segment Wheel
RB系列
Features: Rotary Washable
No. Of Step: 8, 10, 16