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Tongwei Group Co., Ltd., founded in 1995 and headquartered in Chengdu, China, is a globally - recognized large - scale multinational group. It is committed to green agriculture and green energy, with a business scope covering diverse fields such as feed, new energy, food processing, and animal drugs.
In the agricultural sector, Tongwei is a leading player. As the largest aquatic feed producer in China, its products have a market share of over 20% in the domestic aquatic feed market. It also engages in livestock and poultry feed production, providing a wide range of feed products.
In the new energy domain, Tongwei has achieved remarkable feats. It holds the title of the world's largest polysilicon producer, with its 2023 output accounting for 27% of China's total. Moreover, it is the world's largest solar cell producer. The company has established a vertically - integrated photovoltaic industry chain, stretching from upstream high - purity polysilicon production, mid - stream high - efficiency solar cell and module manufacturing, to downstream photovoltaic power station construction and operation. With over 300 subsidiaries across China and overseas, Tongwei continues to drive innovation and growth in both agriculture and new energy industries.
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Research directions include high-efficiency crystalline silicon cells and materials, high-efficiency and high-reliability modules, photovoltaic testing and analysis, new technologies, etc., with a particular focus on the development of core technologies and cutting-edge technologies in the fields of TNC, THC, TBC cells and modules, copper interconnection metallization, perovskite/silicon tandem solar cells, new photovoltaic modules, etc. Furthermore, the Global Innovation R&D Center is committed to the analysis and characterization of materials and devices, reliability testing and evaluation of module products, etc.
High-efficiency Cells and Modules
The main R&D base of Tongwei‘s PV technology center is Tongwei Global Innovation R&D Center. It’s located in Chengdu of Sichuan Province and has branches in cities including Hefei of Anhui Province. Currently, Tongwei has made important breakthroughs in mainstream technology fields such as TOPCon, HJT, BC, and perovskite/silicon tandem solar cells.
● Another Record -- TNC 210 module reached a maximum output power of 743.2W in May 2024
● First in Industry -- 210mm half-cell HJT project development
● First in Industry -- Bifacial microcrystalline development
● Ninth Records -- THC210 high-efficiency module reached a maximum output power of 776.2W in October 2
● Perovskite/Silicon Tandem -- R&D efficiency reached 33.98% in 2024Q4
● Another Record -- TNC 210 module reached a maximum output power of 743.2W in May 2024
● First in Industry -- 210mm half-cell HJT project development
● First in Industry -- Bifacial microcrystalline development
● Ninth Records -- THC210 high-efficiency module reached a maximum output power of 776.2W in October 2
● Perovskite/Silicon Tandem -- R&D efficiency reached 33.98% in 2024Q4
Technology Center of Yongxiang Co., Ltd.
Yongxiang Co., Ltd., a subsidiary of Tongwei Co., Ltd., has three provincial-level R&D platforms: Sichuan Provincial Polysilicon Engineering Technology Research Center, Sichuan Provincial High-Purity Crystalline Silicon Preparation Technology Engineering Lab, and Tongwei Semiconductor R&D Center.
● Electronic grade polysilicon preparation technology
● High-purity crystalline silicon intelligent manufacturing technology
● Reduction furnace one-start full-process automation technology
High-purity Crystalline Silicon
Yongxiang Co., Ltd., a subsidiary of Tongwei, has established a polysilicon engineering technology research center, an enterprise technology center, a high-purity crystalline silicon preparation engineering lab, and a postdoctoral innovative practice base. By the end of May 2024, Yongxiang had applied for 952 patents and had 644 valid patents.
Continuously Iterated and Upgraded Processes and Technologies
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