Ok. How about this one?
Only the information, if this has been stipulated by the Contractor not later than the offer submission deadline, which are confidential to the company, bearing in mind counteracting unfair competition regulations, must not be made available.
I didn't know how to break it up into two sentences.
Actually, I've broken it up, because I wrote THE OFFERS, HOWEVER, ARE MADE AVAILABLE FROM THE MOMENT THEY ARE OPEN. And then the rest of it (above).