LONGi Green Energy Technology Co.,Ltd group and Wafer BU are headquartered in Xi’an. LONGi Mono-crystalline Silicon takes full advantage of regional resources, relies on healthy financial conditions with strong R&D teams to conduct industrial layout and optimize centering in Xi’an, including Yinchuan, Zhongning, Wuxi, Chuxiong, Baoshan and Lijiang. LONGi Mono-crystalline Silicon has developed into the largest Mono-crystalline silicon manufacturer in the world since 2015, and it established a new overseas production base in Malaysia in 2016. By the end of 2018, the production capacity of LONGi Mono-crystalline Silicon has reached 28GW, rising to 36GW by the end of 2019, and it will continue to increase at a high speed to provide the favorable resource guarantee for LONGi’s global increasing capacity and keep adequate supply of mono-crystalline products.
Wafer BU has a unique prospective vision and is committed to providing the world with more reliable and more efficient mono-crystalline products. It cooperates with dozens of international PV labs and several domestic scientific research institutions and academies, and also invests large amounts of money to build the powerful platform for mono-crystalline research and development. In addition, LONGi Mono-crystalline Silicon gathers more than 700 technology research and development talents from the worldwide and applys for 526 core technology patents, establishing the technological leadership of LONGi’s Mono Wafer products in the industry. LONGi, together with other mono-crystalline manufacturers, put forward the concept of “unifying the sizes of Mono-Crystalline Wafer”, strongly promoting the development of industry standardization, the development of “Mono-Crystalline Silicon Wafer”, and the increase of market shares of N-type efficient mono-crystalline silicon products. LONGi Mono-crystalline Silicon has the world's leading diamond wire slicing process and it took the lead in the industry to achieve technology of 100% diamond wire slicing of mono-crystalline silicon wafer in 2015. LONGi Mono-crystalline Silicon persistently establishes and improves the streamlined quality management system to ensure that every mono-crystalline wafer has an excellent quality and meets the customers’requirements.
With a scientific and rigorous attitude, LONGi has spared no effort to improve and enhance production process of mono-crystalline ingot, improve the RCZ crystal pulling process, reduce the oxygen content, increase the service life of mono-crystalline ingot, and precisely control every manufacturing process of products. In the unique world-class intelligent manufacturing workshop, polycrystalline silicon raw materials are loaded into the mono-crystalline pullers developed and improved by LONGi and are made into mono-crystalline ingots with the perfect crystal lattice after undergoing the strict crystal pulling process.