Yingli manufactures polysilicon, ingots, wafers, cells, and modules under one roof. This ensures strict quality control on the entire production process. Due to our heavy investments in state-of-the-art manufacturing equipment as well as our R&D initiatives, the company have achieved a high degree of automation throughout our entire production process.

The products have passed stringent international certification testing standards such as IEC, TÜV and UL, and ISO 9001 standards. The renowned durability and sustainable performance of the roducts are also backed by the 25-year limited power warranty.

• cost effective while ensuring our products perform reliably over their lifespan of 25 years or more. We are motivated by our mission in providing clean, reliable and sustainable energy solutions with competitive cost.
• in-house production of top quality solar cells and our use of high-transmission, textured glass enables us to produce modules that maximize the energy yield of the PV system per unit area, and reduces balance-of-system (BOS) and installation cost per kWp.
• To minimize mismatch, we flash test every module we produce to within a power tolerance of +/-3%.
• We use the best materials available, such as specially designed robust, corrosion-resistant aluminium frames. These frames have been independently certified by TÜV Rheinland to withstand mechanical loading as high as 5400Pa. This strength ensures that our modules remain mechanically stable throughout their quarter-century lifespan.
• All of our modules are independently tested to ensure conformance with the certification and regulatory standards of IEC, UL, etc. The quality of our products is further confirmed by our ISO9001 Quality Management System certifications for our manufacturing facilities.