Hanko Black Silicon Carbide Waterproof Sandpaper. Custom Logo & OEM/ODM: Accepts logo customization and offers full OEM/ODM services for tailored solutions. Wide Grit Range: Available in grit range P60-P3000 to meet various coarse to fine sanding needs. Free Samples: Provides free samples for customers to test quality before placing bulk orders. High Water Resistance: Features good water resistance, suitable for wet sanding applications on metal and wood. Factory Direct Price: Products sold directly from the factory, ensuring competitive pricing and quality assurance. Quality Guarantee: Promises free reproduction for any quality problems encountered by the client. Fast Engineer Response: Offers quick response with engineers available within 24 hours for technical support. 30+ Years Expertise: Backed by over 30 years of dedicated experience in abrasives R&D and production.