36. For the purposes of this Regulation, every quantity of products referred to in section 35 must be calculated,(1) in the case of products referred to in paragraph 1, in linear feet or equivalent weight;
(2) in the case of products referred to in paragraph 2, in units or equivalent weight;
(3) in the case of products referred to in paragraph 3, in kilograms.
That quantity must also be accompanied, for each subcategory of products, by the conversion factor in linear feet, units or in weight, as the case may be, and by the methodology used to establish that factor.