improve knowledge
Saturday, December 3, 2011
Resin know what it is
http://www.azom.com/article.aspx?ArticleID=986
http://en.wikipedia.org/wiki/Resin
http://en.wikipedia.org/wiki/Ion-exchange_resin
http://www.answers.com/topic/resin
http://chem.lapeer.org/Chem1Docs/3D5PlasticsLab.html
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