LONGi Obtains CTF Witness Laboratory Qualification from TÜV NORD

Global News

LONGi has announced that it has been awarded CTF (Customer Testing Facility) witness laboratory recognition by TÜV NORD for its Taizhou module laboratory in Jiangsu Province on January 21, 2021.

Dr. Lv Jun (right), Vice President of LONGi Solar, received the award plaque from Ms. Angella Xu (left), Senior Vice President Renewable of TÜV NORD GROUP

CTF witness laboratory status means LONGi is now able to conduct on-site testing on its products, in accordance with industry standards, using its own testing resources. This will shorten the certification and testing period for new products and materials, reducing associated costs and enabling more rapid response to market changes, while also significantly improving certification efficiency and customer service quality.

Dr. Lv Jun, Vice President of LONGi Solar commented, "LONGi obtaining CTF witness laboratory certification from TÜV NORD underlines recognition of our lab testing capability and management competency. As an industry-leading PV manufacturer, LONGi adheres to technological innovation, continuously increases R&D investment and creates high-performance products to help maximize value for its customers and partners. This is a great step forward in the relationship between both parties. We are hopeful that our collaboration with TÜV NORD will be further strengthened in the future and we will continue to meet customer demands by offering high-quality products and services."

Angella Xu, Senior Vice President Renewables of TÜV NORD GROUP and Vice President of TÜV NORD Greater China added that: "LONGi has made remarkable progress in promoting industrial upgrade through technological innovation. As a third party, TÜV NORD has already been in partnership with LONGi in many ways. We are delighted to be able to provide support for LONGi products in this process. After rigorously auditing the company’s management system, environment, staffing and equipment qualification, we are convinced that the module testing laboratory meets the management standards of TÜV NORD. The certification confirms that LONGi has high competency in quality control and is also a symbol of an industry-leading manufacturing organization. We are looking forward to further technological exchange with LONGi and we will continue maintaining strict control on product quality to promote healthy development of this industry."

About LONGi

LONGi leads the solar PV industry to new heights with its product innovations and optimized power-cost ratio with breakthrough monocrystalline technologies. The company supplies more than 30GW of high-efficiency solar wafers and modules worldwide each year, about a quarter of global market demand. LONGi is recognized as the world’s most valuable solar technology company with the highest market value. Innovation and sustainable development are two of the company’s core values.


The core services of TÜV NORD GROUP mainly include testing, inspection, certification and consulting, which covers a wide area of expertise in industry, energy, railway, mobility, environmental protection, IT, natural resources and aerospace, etc. As a world-leading technical provider, TÜV NORD dedicates itself to offering manufactures, installers, suppliers and investors a comprehensive range of testing and certification services covering assessing safety, performance and quality of PV products and PV system in the field of solar energy. Its capability of testing and certification of PV products is embodied in a variety of PV modules, PV components and materials, balance of system components, energy storage equipment and system, PV power plant, etc. By the end of December 2020, TÜV NORD had accomplished 54GW of worldwide system performance evaluation, including system evaluation, technical due diligence inspection of PV power plant, whole-process quality surveillance and pre-shipment inspection.