... can be used:Main material:--105g,128g,157g coated paper.--80g,100g,120g kraft paper.--400g,450g,500g,600g,800g,900g,1000g, ... 1200g,1500g grey cardboard.--Matte art paper,glossy art paper,coated duplex board,ivory board,gold/siver cardboard,liner ... control: every single piece of product, every production, procedure is inspected and controlled before packing the goods into export carton ...