Each undertaking referred to in Article 19(3) shall report on the quantities of each substance listed in Annex I used as feedstock.
Tuairisceoidh gach gnóthas dá dtagraítear in Airteagal 19(3) ar chainníochtaí gach substainte a liostaítear in Iarscríbhinn I a úsáidtear mar bhunábhar.