YUAN DEAN SCIENTIFIC CO., LTD. (YDS) was established in 1990 with over twenty years experiences in designing and manufacturing various kind of products such as DC/DC converters, AC/DC converters, RJ45 Magnetics, lan filters, delay lines, and more. YDS has been ISO9001:2000 certified since 1994, and commits to provide products with excellent quality, high reliability, flexible delivery and most importantly we are strategically setting our resource, such as manufacturing base in China to be cost competitive.