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Materials  Preferred Resource.
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NetComposites. Covers reinforced plastics and composites with news, events information and career opportunities. It also has a discussion forum, a 60 page tutorial section and extensive directory of composites information.
Polysort. A group purchasing organization for the plastics and rubber industry, offers online resin purchasing, industry news, discussion groups, links and marketing programs for processors and suppliers. Principal Metals Corp. A large number of properties of ferrous and non-ferrous metals are available on this company's web site.
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