English to Spanish Medical Medical: Pharmaceuticals Medical

Hi!

What is the equivalent of "downstream users" in the following sentence:

"General use conditions (food contact): It pertains to downstream users of materials intended to come into contact with food, to ensure that the final materials or articles do not bring about an unacceptable change in the composition of the food, or bring about a deterioration in the organoleptic characteristics which render it unfit".

Thanks!!