date: Sun, Aug 12, 2012 at 8:10 AM
Dear sir
we need ball bearings diameter of 17 mm and 18mm and roller bearings diameter of 18mm and 20 mm all in full nitride silicon, would like to have some piece for testing before ordering.We will also need others sizez between 20 mm to 50 mm.
发表于 2012-8-14 01:32:53
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发表于 2014-7-1 17:10:33
