Hollow Sheet import Finland

We are Importer /Wholesaler for Finland and we are looking for Hollow Sheet factory from Europe
Main product is; White PP //2400x1200mm x3mm , 400g/m2 , Nowadays we buy 10 x 40' / year
the sheet are used for protection, so they can contain recycled material to keep the price competitive.
Sheets have a simple / 1-color print, and the sheets are packed in 10-piece packages , 1x 40' container is 850packet / 8500 sheet
Our port is Helsinki , Finland