<http://schema.org/description>
"&lt;p&gt;The global printed circuit board industry has experimented with various solderability preservatives including organics, immersion tin, immersion silver, electroless nickel/immersion gold and others. This article examines the strengths and weaknesses of each...&lt;/p&gt;"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.pfonline.com/articles/printed-circuit-boards-final-finish-options>