Wholesale Customized Grey Paper Board 0.5mm 2mm 4mm Gray Cardboard for Boxes

Wholesale Customized Grey Paper Board 0.5mm 2mm 4mm Gray Cardboard for Boxes. Customizable Thickness: Thickness ranges from 0.35mm to 5mm to meet specific project requirements. High GSM Range: Available in 150GSM to 2400GSM, with substance up to 2200GSM for durability. Moisture Proof: Features anti-curl and deformation-resistant properties for stable performance. Certified Quality: Passed ISO9001, ISO14001, ISO45001, SGS, and RHOS certifications. Versatile Applications: Ideal for jigsaw puzzles, gift boxes, book covers, and furniture panels. Flexible Packaging: Can be shipped in sheets or rolls, wrapped in PE film on wooden pallets. Direct Factory Sale: Direct sales from Dongguan factory with nearly 10 years of export experience. Free Samples: Free samples available for quality check; customer only pays for shipping.