The European Commission sent out questionnaires to various interested parties, such as exporting producers, Union producers, importers, suppliers of components such as silicon, installers, and their representative associations.
Euroopa Komisjon saatis huvitatud isikutele (eksportivad tootjad, liidu tootjad, importijad, komponentide, nagu silikoon, tarnijad, paigaldajad ning nende esindajate ühendused) küsimustikud.