Members of OSEM (Organisation for System Equipment Manufacturers) believe that where their own products are mixed with equipment of uncertain quality from alternative, unapproved sources, users may risk product performance issues and the possibilities of failures occurring.   OSEM is a non-commercial organisation comprising a growing number of independent companies. More info.   The potential risks…and key points to check. More info. The creation of a Code of Practice by the NASC is now well under way. More info. Direct your enquiry to a member company. More info.