Yuanda industrial Limited by Share Ltd (Diptronics Manufacturing Inc) in 1985 in Taiwan, New Taipei city was founded, professional R & D and manufacturing all kinds of program switch, touch switch, rotary switch, slide switch, composite function switch and LED switch and other products, and achieved TS 16949 and the ISO-14001 certification, product marketing at home and abroad more than 100 countries. Diptronics products can be widely used in consumer electronics industry (such as mobile phone, digital camera, tablet computer, notebook computer...), cloud device, automobile industry, household appliances industry, health care products industry and communication industry etc..