Winmate shall ensure (either by marking the products, or, if such is impossible or impractical, by other suitable measures) that whenever defects become apparent in products Winmate can instantly establish which other products might be affected. Relevant details concerning such identification shall be specified in Annex 3 to this Agreement. Winmate shall give BARTEC sufficient information about this marking system or other measures taken to enable BARTEC to carry out its own investigations to the extent required.