Focus on Photovoltaic Materials Supply & Technology Collaboration

WILMINGTON, Del., March 26, 2012 –DuPont announced it has signed two strategic cooperation agreements with Changzhou Trina Solar Energy Co., Ltd. (a wholly-owned subsidiary of Trina Solar Limited), one of the world's foremost photovoltaic companies. The agreements cover the supply of DuPont™ Tedlar® polyvinyl fluoride films and technology collaboration, including collaborative efforts involving DuPont™ Solamet® photovoltaic metallizations and other key materials. The companies will work together to advance the efficiency and lifetime of solar cells and modules, and lower the levelized cost of energy for photovoltaics. Terms of the agreements were not disclosed.

David B. Miller, president, DuPont Electronics & Communications (left) and Jifan Gao, chairman and chief executive officer, Trina Solar (right), sign two strategic cooperation agreements for solar materials and technology collaboration. Photo courtesy of DuPont.

"At Trina Solar, our mission is to make the world a better place by providing affordable and clean solar energy," said Jifan Gao, chairman and chief executive officer, Trina Solar. "We have set clear goals with long-term focus on performance, innovation and durability for our modules, and hold high confidence that collaborating with DuPont can accelerate our achievements."

Anticipated areas of technology collaboration for Trina and DuPont include higher efficiency cells and modules, customized Solamet® photovoltaic metallization pastes and other materials to help enable Trina's technology platforms including its high-efficiency Honey Series modules, as well as innovative framing, backsheet and other components.

"DuPont is pleased and honored to work with Trina Solar to provide materials and technology expertise that will help boost the efficiency and extend the lifetime of their modules," said David B. Miller, president - DuPont Electronics & Communications. "Our work together to optimize the performance of advanced materials such as Tedlar® films and Solamet® metallizations used in Trina's high-efficiency modules has terrific potential for significant impact that can help set them apart in today's competitive market."

DuPont™ Tedlar® polyvinyl fluoride films and DuPont™ Solamet® photovoltaic metallization pastes are part of a broad and growing portfolio of products represented by DuPont Photovoltaic Solutions (DPVS), 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, please visit http://photovoltaics.dupont.com.

Trina Solar Limited (NYSE: TSL) is a leading manufacturer of high quality modules and has a long history as a solar PV pioneer since it was founded in 1997 as a system installation company. Trina Solar is one of the few PV manufacturers to have developed a vertically integrated business model that extends from the production of monocrystalline and multicrystalline silicon ingots, wafers and cells to the assembly of high quality modules. Trina Solar's products provide reliable and environmentally-friendly electric power for a growing variety of end-user applications worldwide. For further information, please visit Trina Solar's website at http://www.trinasolar.com.

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 http://www.dupont.com.