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You can also use many other forms of passivation to achieve a smooth, clean metal surface that will be free from corrosion, but electro polishing is useful because of its numerous applications.

<a href="http://www.astropak.com/ultra-pass-passivation.php">http://www.astropak.com/ultra-pass-passivation.php</a> - <a href="http://www.astropak.com/electropolishing.php
">http://www.astropak.com/electropolishing.php</a>