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The History of Ceramic Abrasive Grain (Part I)
This video has two parts, Part I introduces the history of abrasive grain and some milestones before the birth of ceramic abrasive grain. From natural stone to synthetic abrasive grains, watch how abrasive grain has transformed.
In the next month say on 8 February have been starting my classes for the MS – project management and I have the fictional character in the Read more and for the isolation of myself for study.