For models, the units of which are placed on the market before the date of entry into force of this Regulation and which are no longer marketed, registration should be optional.
Ba cheart clárú a bheith roghnach do mhúnlaí nár cuireadh na n-aonaid díobh ar an margadh ach amháin roimh dháta theacht i bhfeidhm an Rialacháin seo agus nach margaítear a thuilleadh.