Dyneon And Shangdong Dongyue Enter PTFE Intermediate Agreement

Oakdale, Minn.-based Dyneon LLC — a 3M company and a fluoropolymer supplier — and China-based
Shangdong Dongyue Polymer Material Co. Ltd. — a producer of polytetrafluoroethylene (PTFE) — have
entered into a raw material supply agreement for suspension PTFE intermediate.

The agreement provides Dyneon flexibility for its customers’ growth; and allows Shangdong
Dongyue to strengthen its manufacturing ability for suspension PTFE intermediates and to build on
its commitment to developing advanced technologies.

June 23, 2009

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