Grassland Black Silicon Carbide Waterproof Sandpaper. Custom Logo & OEM/ODM: Accepts logo customization, OEM, and ODM services for tailored branding. Wide Grit Range: Available in grits from P60 to P3000 to suit various coarse to fine applications. High Water Resistance: Silicon carbide abrasive with good water resistance for wet sanding applications. Free Samples: Offers free samples for clients to test quality before placing bulk orders. 30+ Years Expertise: Over 30 years of dedicated experience in advanced abrasives R&D and production. ISO Certified Quality: Operates under ISO 9001 & 14001 certified processes ensuring high quality. Fast Response Support: Provides quick response with engineer support available within 24 hours. Free Reproduction for Defects: Promises free reproduction of products if any quality problems occur.