The Accreditation Body requires that NGCL ensure that their certified clients use the Certification Mark and the Accreditation Symbol in accordance with their rules of usage. These rules ensure that the mark and symbol are not used in such a manner that may be misleading to the organizations and individuals that purchase goods and services from certified companies. Any promotion of the management system symbol must be clear. It is not acceptable to imply that it is the product or the service that is certified and not the management system.