A small coffee roaster  travels to Ethiopia and buys green coffee directly from a coffee farmer without intermediary trade. They invest part of the profit in the construction of local schools. I was surprised how many people in Ethiopia can benefit from this.
An engineering firm  provides energy consulting services in Mannheim until they have made the necessary turnover. With the rest of the time and the profit left over, they go to affected countries in Africa and build wells there, because as engineers they can easily do that. The impact is innumerable. In both cases, direct social impact is in the countries described, but the jobs of the companies are created here, so we have good arguments for supporting these companies.