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700mm Ceramic Bond CBN Grinding Disc for Powder Metallurgy Parts. Superior Surface Finish: Achieves Ra0.03-Ra0.8 roughness, eliminating the need for post-polishing. High Efficiency & Durability: Features high grinding efficiency, long service life, and strong sustainability. Customizable Specifications: Offers customization for size, grit (80-4000), and specific application requirements. Specialized Application: Designed specifically for grinding powder metallurgy parts like compressor valve plates.