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High Quality Competitive Price Synthetic Diamond Grit Micro Powder 1. Diamond micro powder (um) : For polishing: 0-0.5, 0-1, 0-2, 0.5-1, 0.5-1.5, 1-2, 1-3, 2-4, 2.5-5, 3-6 For Lapping: 4-8, 5-10, 6-12...