From what I read on the website, it's an odd publisher.
Their mission is "to deliver 'tools' so people can improve their lives".
They say that a lot of good books are not available in Dutch, so they publish
books they think should be translated. They even invite readers to suggest books
for them to publish in Dutch.
They list a number of books they have published in Dutch, most seem to be (pseudo-)
medical self help books or books on how to become rich. (the answer to that
question is: sell gullible people books on how to become rich, right?).
The impression I get from the website and the books they are offering is that
they are not a serious publisher.
The holding company that this publisher is part of also does business coaching,
travel and seminars.