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DuPont Fayetteville

Initiates Polymer and Film Expansion Project

News Release

Wilmington, DE, September 2, 2008

DuPont Plans to Increase Supply of Tedlar® Films for Fast-Growing Photovoltaic Solar Market

As a leading supplier of materials to the photovoltaic solar industry, DuPont today announced its intent to expand production capacity for its high-performance DuPont™ Tedlar® films. Scope and site selection work is under way, targeting start-up in late 2009, pending final project approval. Upon completion, the project is expected to more than double the current global production for Tedlar®, and would be the largest capital investment in Tedlar®. Additional details about the expansion phases will be announced later this year.

"The photovoltaic industry is in the midst of a substantial surge globally, and the demand for solar energy continues to increase," said Cynthia C. Green, vice president and general manager - DuPont Fluoroproducts. "This project underscores our commitment to sustainability and providing products that deliver clean, renewable energy for people around the world.  Increasing capacity is a priority for our business, and today's announcement builds on our capacity expansions in Tedlar® polymer in 2007 and the introduction of the new Tedlar® 2100 Series film products for photovoltaic modules."

DuPont™ Tedlar® films have been an essential component of photovoltaic backsheets for more than 25 years.  Tedlar® is widely recognized as the industry standard due to its excellent weather resistance, ultraviolet resistance and moisture barrier properties. As a result, Tedlar® enables solar modules to achieve long-life performance. Tedlar® films also are used in key applications for aerospace, construction and graphic arts because of their durability and weatherability. Tedlar® is manufactured at DuPont's Fayetteville, NC, facility, as well as sites in Louisville, KY, Buffalo, NY, and Towanda, PA.

DuPont anticipates that the photovoltaic market will grow by more than 50 percent in each of the next few years, driving demand for existing and new materials that are more cost effective. DuPont expects that its sales of several product lines into the photovoltaic industry could exceed $1 billion within the next five years.

DuPont is a science company. Founded in 1802, DuPont puts science to work by creating sustainable solutions essential to a better, safer, healthier life for people everywhere. Operating in more than 70 countries, DuPont offers a wide range of innovative products and services for markets including agriculture, nutrition, electronics, communications, safety and protection, home and construction, transportation and apparel.

Forward-Looking Statements:  This news release contains forward-looking statements based on management's current expectations, estimates and projections. All statements that address expectations or projections about the future, including statements about the company's strategy for growth, product development, market position, expected expenditures and financial results are forward-looking statements. Some of the forward-looking statements may be identified by words like "expects," "anticipates," "plans," "intends," "projects," "indicates," and similar expressions. These statements are not guarantees of future performance and involve a number of risks, uncertainties and assumptions. Many factors, including those discussed more fully elsewhere in this release and in DuPont's filings with the Securities and Exchange Commission, particularly its latest annual report on Form 10-K, as well as others, could cause results to differ materially from those stated. These factors include, but are not limited to changes in the laws, regulations, policies and economic conditions of countries in which the company does business; competitive pressures; successful integration of structural changes, including acquisitions, divestitures and alliances; research and development of new products, including regulatory approval and market acceptance, and seasonality of sales of agricultural products.

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