Grey Board import companies and grey board import trade opportunities Paper - Packaging - Printing

I am searching for a turkish producer of grey board Any suggestion? I am not sure how familiar you are with grey board? It is a thick paper made of recycled papers. Usually comes in thickness of 1-3mm We usually use above 50k-100k sheets of boards per month with thickness between 1-3mm, grey/grey, grey/black, grey/white.