... (Mohs hardness 9.0 ~ 9.5), mullite (Mohs hardness 7.0 ~ 7.5) and corundum (Mohs hardness 9.0 ~ 9.2).Product density is high, the v...
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B076 Buy Big Buffing Silicon Corundum Carbide Polishing Iron Finishing Wheels 4 Inch Abrasibe Disc Grinding And Cutting #detail_decorate_root .magic-0...
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