Useful links

http://www.pxds.com/
http://www.pxdsaustralia.com/
http://www.pxdsusa.com/
http://www.pxdbenelux.com
http://www.mymobichip.nl/
http://www.homeemfprotection.com/
http://www.facebook.com/pages/PXD-System/157399357648142
http://www.facebook.com/pages/Pxds-Australia/208831405825436
http://www.facebook.com/pages/Home-EMF-Protection/169744033081611