Looking at the images Steve,
it looks like your friend is a carpet dealer himself, who should know about the origin of these?
Very attractive rugs nonetheless, but I'm struggling to see the 30 years age in them, unless you can verify that this is correct I would say they are modern Chinese.
I would second USER:KAD's comment on North West China but again the images don't give us too much information at this stage.
Thanks for the post.
OrientalYarns
Kind Regards,
Stephen Saunders
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*All comments, opinions and views are my own unless stated or linked within my posts. All details provided via photographic evidence can only be used as a guide, unless the piece is in front of me for a full appraisal.