Indasa Black Silicon Carbide Waterproof Sandpaper. Silicon Carbide Material: High-performance abrasive made from silicon carbide for efficient grinding. Waterproof Design: Water-resistant sandpaper suitable for wet sanding applications. Wide Grit Range: Available in P60 to P3000 grits to meet various finishing needs. OEM and ODM Services: Full customization options including samples, designs, and flexible customization. ISO Certified Quality: Manufactured under ISO 9001 and 14001 certified processes for reliability. 30+ Years Expertise: Over three decades of dedicated R&D and production in advanced abrasives. Free Sample Offer: Complimentary samples available for evaluation before bulk orders. Fast Response Support: Engineers available for quick response within 24 hours for technical issues.