3m P60 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 P60-P3000 grit range to meet various coarse to fine sanding needs. Free Sample Offer: Provides free samples for quality testing and evaluation before bulk orders. High Water Resistance: Silicon carbide abrasive with good water resistance for effective wet sanding. 30+ Years Expertise: Over 30 years of dedicated experience in advanced abrasives R&D and production. ISO Certified Quality: ISO 9001 & 14001 certified processes ensuring stable and high-quality products. Fast Response Support: Engineers available for quick response within 24 hours for technical support. Free Reproduction Guarantee: Promises free reproduction of products if any quality problems occur.