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Description:
tively regular crystal shape, high mechanic strength, beolonging tomiddle grade, containing more regular crystal, suitalbe forgrinding and free-cutting tools, grinding wheels which work withmedium load.

Description:
tively regular crystal shape, high mechanic strength, beolonging tomiddle grade, containing more regular crystal, suitalbe forgrinding and free-cutting tools, grinding wheels which work withmedium load.

