Modison Group of Companies manufactures Silver Tin Oxide Contacts. Modison Group of Companies is an ISO 9001:2000 certified company. Silver Tin Oxide Contacts are made when fine silver layer is perfectly bonded with the silver tin oxide contact material by a special process at the time of extruding and processing the material. Silver Tin Oxide Contacts as a contact material has been developed mainly as an alternate for Silver Cadmium Oxide for ecological considerations. However this material is superior to Silver Cadmium Oxide in terms of erosion and welding characteristics and is specially found much better than Silver Cadmium Oxide for capacitive Switching as well as DC switching application.