I would like to find a new supplier for my company in a specific country, is it possible to ask this community to help me in my duty or is it inappropriate ?
I'm afraid that this is not the place. By doing that we are basically "doing your job". In TWP we address questions that have a goal and that are not opinion-based ("choose this provider... no choose this other").
However, if you phrase it in a good way (see Help Center) it may be on-topic and something we could help you with. If you phrased it more like "What would be the general steps for finding a new provider in..." or "What would be a professional and polite way to ask this company if they are willing to be our provider", etc...
So, basically we can't do your job for you (find the provider) as that would be off-topic here and in any SE site I believe. What we can help you with is to navigate with any uncertainty you may have regarding the professional way of carrying that process.