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Brown Fused Alumina Ceramic Media for Polishing Sandpaper for Grinding & Material Processing. Wide Grit Range: Available from coarse 8# to micro 4000# for diverse grinding needs. High Hardness & Toughness: Mohs hardness 9 with excellent self-sharpening and compression strength. OEM & ODM Services: Full customization available including brand and design requirements. Fast Sample Delivery: Free samples delivered within 10 days for quality testing. Certified Quality: ISO9001, CE, TUV, and SGS certified with in-house lab testing. Versatile Applications: Suitable for ceramics, refractories, sandblasting, and precision casting.