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File name:Hardness test
Category:Technology Video Download
Click:204
Download:19
Published:2013-06-14 03:06:32
Update:2013-06-14 03:25:23
Summary:Hardness test

Hardness test from Tiancheng Group Limited

http://www.youtube.com/watch?v=GoZ4ryAcTaA

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Precision Seamless Steel Tube Manufacturer