Consider a hypothetical quote:
Each day we gather information from manufacturers, distributors, Russian and foreign vendors, research centers. The reliability of the sources is ensured by our contacts with employees in those organizations.
Those is used to describe objects that are more distant, either physically or in the abstract sense. But could we say "these organizations" here, since they have been introduced in the first sentence and hence made somewhat "closer" to the reader? Or would that be a mistake?