German Voice Talent Neeed

I'm looking for German voice talents. We produce slide shows and product presentation videos for which we need dialect-free voice talents for male and female voices. The potential vendors must have experience in voice over projects and must be able to provide a sample of their voice in mp3 format (clean, with no background noise). Once the candidates are pre-selected, they must be willing to record a short sample script so that we can assess if they suit our needs. This could become an ongoing collaboration as we produce these kinds of media for different clients on a regular basis. The average length of a script is between 400-600 words / 3-5 minutes recording and the volume of recordings is about 10-20 per week. Please place your bid on the completion of 10 such recordings. Thank you and happy bidding!