The
use of a wide range of steel grits and low prices, so many manufacturers use it.
In various fields have used, but many manufacturers have used once after. That
the grit has been damaged, there is no use of the value, and when the garbage
lost, and this resulted in a lot of waste of resources, in fact, the use of
grit or use value, the use of the steel after the secondary treatment Or can
continue to use.
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