I really cannot make enough sense of it as it stands to offer a decent edit. I suggest that you break it up into two or three sentences, at least.
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NewguestOk. 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 brok