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Hi!

Is this expression Ok? Or should it be: corporate negotiation system, firm's negotiation system or some of the mentioned nouns with OF-phrase?

It is used in the more general context of an immaginary firm, for the purposes of explanation of the phenomenon.

Thank you
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Those all seem usable, but would it be system or policy? Corporate suggests that it is the same for all companies, where company suggests that it may be unique to each.
Comments  
I guess policy is also possible. Here's te context:

Win-win solutions are often conditioned by general approach to negotiation in an organization and by the existence and sofistication of the company's negotiation system/policy.

I hope you can understand what I was trying to translate here.

Thank you