Lead Research (on German Websites)

Hello :)
I'm looking for someone who is able to find Event and Promotion Agency in Germany for me. I already have a list of 70 exakt matching Companies, but I need at least 250. I already have some lead lists, but I need also help to go through them and check if the links match the niche.

Reach out if you are interested!

PS: The websites are in German!