I dette kapitel skal, medmindre andet følger af sammenhængen, copolymerer (herunder copolykondensater, copolyadditionsprodukter, blokcopolymerer og podede copolymerer) og blandinger af polymerer tariferes i den position, der omfatter polymerer af den comonomer, hvis vægt overstiger vægten af enhver anden enkelt comonomer.
For the purposes of this chapter, except where the context otherwise requires, copolymers (including co-polycondensates, co-polyaddition products, block copolymers and graft copolymers) and polymer blends are to be classified in the heading covering polymers of that comonomer unit which predominates by weight over every other single comonomer unit.