DuPont and Yingli Green Energy Sign Expanded Strategic Agreement

DuPont and Yingli Green Energy Sign Expanded Strategic Agreement

Key Collaboration to Spur Further Adoption of Solar to Meet Growing Energy

BAODING, China, June 5, 2013 (GLOBE NEWSWIRE) -- via PRWEB - DuPont and Yingli
Energy (China) Company Limited (Yingli China), a wholly owned subsidiary of
Yingli Green Energy Holding Company Limited (Yingli Green Energy), have signed
a new one year, $100 million strategic agreement that includes the supply of
advanced solar materials, the installation of a solar power plant and
co-marketing initiatives aimed at accelerating the broader and faster adoption
of solar energy to address the world's growing energy needs. This agreement is
an expansion of a $100 million supply agreement between the companies
announced in February 2012.

"Materials are critical to help ensure our solar panels provide superior power
output for their 25-year expected lifetime, or longer," said Liansheng Miao,
chairman and chief executive officer, Yingli Green Energy. "The agreement we
have signed with DuPont assures our supply of high-quality materials that have
proven performance and our continued collaboration on further technological
advances to optimize the efficiency and durability of our products. Yingli
Green Energy has long been committed to making solar affordable for everyone
with superior quality products."

Under the terms of the agreement, Yingli China will purchase materials
including DuPont™ Solamet® photovoltaic metallization pastes that help boost
the power output of solar cells and DuPont™ Tedlar® polyvinyl fluoride film
that has been proven to protect solar panels even in the harshest
environmental conditions. The companies also will extend their collaboration
to include the installation of a solar energy plant at a DuPont facility in
China using panels made with advanced materials from DuPont, and will
potentially expand installation of similar plants to additional DuPont sites
or other commercial projects in China. Yingli China and DuPont further agreed
to extend their collaboration on technology to develop the next generation of
high-efficiency solar cells and modules, and on co-marketing activities.

"This agreement further expands our strategic relationship, and we look
forward to working even more closely with Yingli to deliver superior quality
solar panels that will continue to accelerate the adoption of solar energy to
meet the growing global demand for energy," said David B. Miller, president,
DuPont Electronics and Communications.

Yingli Green Energy Holding Company Limited, which markets its products under
the brand "Yingli Solar," is a leading solar energy company and one of the
world's largest vertically integrated photovoltaic manufacturers. Yingli Green
Energy's manufacturing covers the entire photovoltaic value chain, from the
production of polysilicon through ingot casting and wafering, to solar cell
production and module assembly. For more information, please visit

DuPont™ Solamet® photovoltaic metallizations and Tedlar® polyvinyl fluoride
films are part of a broad and growing portfolio of products represented by
DuPont Photovoltaic Solutions, which connects science and technology from
across the company on a global scale to help support the dramatic growth in
the photovoltaic industry. To learn more about DuPont Photovoltaic Solutions,

DuPont (NYSE:DD) has been bringing world-class science and engineering to the
global marketplace in the form of innovative products, materials, and services
since 1802. The company believes that by collaborating with customers,
governments, NGOs, and thought leaders we can help find solutions to such
global challenges as providing enough healthy food for people everywhere,
decreasing dependence on fossil fuels, and protecting life and the
environment. For additional information about DuPont and its commitment to
inclusive innovation, please visit

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 documents filed with the Securities and Exchange
Commission by DuPont, particularly its latest annual report on Form 10-K and
quarterly report on Form 10-Q, 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,
including inflation, interest and foreign currency exchange rates, of
countries in which the company does business; competitive pressures;
successful integration of structural changes, including restructuring plans,
acquisitions, divestitures and alliances; cost of raw materials, research and
development of new products, including regulatory approval and market
acceptance; seasonality of sales of agricultural products; and severe weather
events that cause business interruptions, including plant and power outages,
or disruptions in supplier and customer operations. The company undertakes no
duty to update any forward-looking statements as a result of future
developments or new information.

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The DuPont Oval Logo, DuPont™, The miracles of science™, Solamet® and Tedlar®
are registered trademarks or trademarks of DuPont or its affiliates.

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         Ellen G. Pressley
         +1 919-248-5598
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