English Black Silicon Carbide Waterproof Sandpaper. OEM and ODM Customization: Accepts customization from samples, designs, and full customization options. Wide Grit Range: Available in P60 to P3000 grit range for various sanding needs. Free Sample Offer: Samples are offered free of charge for customer evaluation. Global Technical Support: 24/7 multilingual customer service and engineering support available. ISO Certified Quality: Manufacturing processes certified under ISO 9001 and 14001 standards. Fast Response Time: Engineers provide quick responses within 24 hours for inquiries. Competitive Factory Pricing: Direct sales from factory ensure competitive pricing and quality assurance. Free Reproduction for Defects: Any quality problems are resolved with free reproduction of the product.