Profesional Translation of .properties files and review of DE and IT translations

Profesional Translation of .properties files and review of DE a FR translations.

We are a website and we want to translate our website to the following languages:

German (Austria) (We already have the files in this language, but we want a review for Austria.
Dutch (Belgium)
Dutch (Netherlands)
Czech
Greek
Portuguese
Polish
Turkish
Chinese(Taiwan)
Japanes
South Korean

We want a profesional translation, you can use a translator, but a human review should be implement on every translation.

We would like a review of our DE and IT translations