1359 thick gray cardboard products are offered for sale by suppliers on Alibaba.com, of which paper & paperboards accounts for 46%, paper boxes accounts for 21%.
A wide variety of thick gray cardboard options are available to you, such as craft, clothing and shoe.You can also choose from waterproof, recyclable and eco-friendly thick gray cardboard,as well as from wood pulp, mixed pulp, and straw pulp thick gray cardboard,and whether thick gray cardboard is coated, or uncoated.