LONGi signed a strategic cooperation agreement on June 2, 2020 in Shanghai with DuPont, with the aim of jointly creating high-quality modules through efficient and reliable materials, helping downstream customers to build more reliable and higher-quality photovoltaic power plants. Both parties have also agreed to promote the industry's understanding of the value of reliable products, and to continuously create value for the photovoltaic industry through deepening cooperation on product innovation, technology R&D, branding and marketing.LONGi and DuPont have cooperated since 2015. Over the past five years, the power and efficiency of photovoltaic modules have made qualitative leaps, and the cost of photovoltaic power has been declining, now close to the threshold for achieving grid parity. During this period, LONGi and DuPont have been actively working together to explore more advanced products and solutions, and to promote the popularization of high-quality products.

The results of the cooperation between the two parties have been verified in many projects around the world and the efficiency and reliability jointly advocated by both companies is gaining more attention and recognition globally.

Dingli & LonGi had signed the joint development of International market, to jointly serve global customers and provide better clean energy solutions.