as Samples A4 Size Double Gray Cardboard

as Samples A4 Size Double Gray Cardboard. Customizable Sizes: Available in standard sizes (787*1092mm, 889*1194mm) and special custom sizes. Wide Thickness Range: Thickness options from 0.72mm to 3.84mm to suit various needs. Multiple Grade Options: Offered in Class AA, Class A, and Class B grades. Versatile Applications: Suitable for paper boxes, photo frames, book covers, storage boxes, and puzzles. Flexible Packaging: Available in both sheets and rolls for different usage scenarios. OEM and ODM Services: Full customization from samples, designs, and minor adjustments available. Fast Delivery: Delivery time is approximately 5 to 15 days after receiving the deposit. Free Sample Availability: Free samples provided; customer only needs to cover express delivery account.