Tongwei Company

Tongwei Company is a publicly listed Chinese agricultural and energy company headquartered in Chengdu, Sichuan. Its business developed from aquatic feed into a vertically connected operating model that spans animal nutrition, photovoltaic materials, and solar-cell manufacturing. The company is particularly associated with aquaculture feed and with large-scale production of high-purity polysilicon and photovoltaic cells. Liu Hanyuan established the business as Tongwei Feed Co., Ltd. in 1992, initially focusing on aquatic feed. Tongwei expanded as competition compressed feed-sector margins and scale became increasingly important. The company entered the photovoltaic industry in 2006, a strategic move linked to the growth of China's clean-energy sector and to the possibility of combining its agricultural capabilities with renewable-energy development. In 2007 it acquired a factory producing polyvinyl chloride, a material relevant to polysilicon production, although its early photovoltaic expansion faced technological, market, and financing challenges, including the difficult conditions surrounding the 2008 global financial crisis. Tongwei later pursued greater vertical integration. In 2013 it acquired LDK Solar Hi-Tech (Hefei), a solar-cell and module manufacturing operation associated with LDK Solar. The transaction gave Tongwei a route to use internally produced polysilicon in downstream photovoltaic manufacturing. The company also promoted an integrated model in which solar installations could be located above or around aquaculture ponds. This approach was presented as a way to produce electricity while retaining agricultural use of land and water areas, reducing operating costs, and supporting rural development. The photovoltaic division became a major growth engine. Tongwei's Yongxiang subsidiary developed substantial polysilicon capacity, while the group expanded its solar-cell manufacturing footprint. The company has been described as one of the world's largest producers of high-purity polysilicon and solar cells. Its agricultural operations remain important, including aquatic feed and livestock-feed activities, creating a distinctive portfolio that combines food-production inputs with renewable-energy manufacturing. Tongwei was listed on the Shanghai Stock Exchange on 16 February 2004. Liu Hanyuan later moved away from the chairmanship of Tongwei Company; in 2019, his daughter Liu Shuqi succeeded him as chair, while Liu Hanyuan continued to exercise significant influence over the wider business according to published accounts. The company has faced operational disruptions, legal exposure, and intense photovoltaic price competition. A flood warning in August 2020 forced the temporary closure of a 20,000-tonne polysilicon plant in Leshan, and in 2023 Maxeon Solar Technologies filed a patent-infringement lawsuit concerning shingled solar-cell panel technology. Tongwei appeared on the Fortune Global 500 list for the first time in 2023, at number 476. Later that year it announced a planned investment of approximately US$3.9 billion in a large factory in Ordos, Inner Mongolia, during a period of falling photovoltaic prices and declining industry profitability.

Tongwei began in 1992 when Liu Hanyuan founded Tongwei Feed Co., Ltd. as an aquatic-feed business. Its early growth was based on animal nutrition, especially products for aquaculture. As competition increased and profit margins narrowed, the company sought greater production scale and additional sources of growth. The group entered the photovoltaic sector in 2006, responding to the expansion of China's renewable-energy industry and the government's increasing emphasis on pollution reduction and clean energy. In 2007 it acquired a polyvinyl chloride factory, giving it an industrial base relevant to the development of polysilicon production. This initial photovoltaic period was difficult: Tongwei was a late entrant, had limited experience in the sector, and faced an adverse international environment during the 2008 financial crisis. China's photovoltaic producers also remained heavily exposed to subsidy policy and international competitiveness challenges. Rather than abandon its agricultural identity, Tongwei developed a model linking aquaculture with photovoltaic generation. Solar facilities could be installed above or near fish-farming ponds, allowing electricity production without entirely displacing agricultural use. The company presented this approach as a means of improving aquaculture economics and supporting rural development, including policy goals associated with targeted poverty alleviation. A major step toward vertical integration came in 2013, when Tongwei acquired LDK Solar Hi-Tech (Hefei), a solar-cell and module manufacturing operation. The deal complemented Tongwei's polysilicon ambitions with downstream manufacturing capacity. Over time, the company became a significant producer of high-purity polysilicon and solar cells while retaining substantial feed operations. This combination distinguished Tongwei from businesses focused exclusively on either agricultural inputs or renewable-energy equipment. Tongwei's leadership structure changed in 2019, when Liu Hanyuan stepped down as chairman and Liu Shuqi succeeded him. Liu Hanyuan nevertheless remained an important figure associated with the group. The photovoltaic business continued to expand, but it also encountered the operational risks of large-scale industrial production. In August 2020, a flood warning forced the closure of a 20,000-tonne polysilicon plant in Leshan operated by the company's Yongxiang subsidiary. The company entered the 2020s as one of the largest global producers of polysilicon and solar cells. Its growth brought increased visibility and legal exposure. In June 2023, Maxeon Solar Technologies filed a patent-infringement lawsuit related to shingled solar-cell panel technology. In August of the same year, Tongwei appeared on the Fortune Global 500 list at number 476. In December 2023, the company announced plans to invest approximately US$3.9 billion in a major factory in Ordos, Inner Mongolia. The proposal came amid a photovoltaic industry price war, declining prices, and pressure on profitability. Tongwei therefore entered its current phase with a broad but cyclical portfolio: feed and aquaculture provide its agricultural base, while polysilicon and solar cells connect it to the rapidly changing global energy-transition market.

1. 2023Fortune Global 500 debut

   Tongwei was listed on the Fortune Global 500 for the first time, at number 476.

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2. 2023Ordos factory investment plan

   Tongwei announced a planned large-scale factory investment in Ordos, Inner Mongolia, amid photovoltaic-sector price pressure.

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3. 2020Leshan polysilicon disruption

   A flood warning forced the temporary closure of a 20,000-tonne polysilicon plant in Leshan.

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4. 2019Leadership transition

   Liu Shuqi succeeded Liu Hanyuan as chairwoman of Tongwei Company.

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5. 2013Acquisition of LDK Solar Hi-Tech (Hefei)

   The acquisition added solar-cell and module manufacturing capacity and strengthened Tongwei's vertical integration.

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6. 2007Industrial expansion supporting polysilicon ambitions

   The company acquired a polyvinyl chloride factory, adding industrial capabilities relevant to its photovoltaic-materials strategy.

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7. 2006Entry into photovoltaics

   Tongwei entered the photovoltaic industry as part of a diversification and clean-energy strategy.

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8. 2004Initial public offering

   Tongwei completed its initial public offering and began trading on the Shanghai Stock Exchange on 16 February.

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9. 1992Tongwei Feed was founded

   Liu Hanyuan founded the business as an aquatic-feed company, establishing the foundation of Tongwei's agricultural operations.

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A vertically integrated Chinese agriculture and clean-energy company combining large-scale feed production with upstream polysilicon and downstream photovoltaic-cell manufacturing.

• Aquatic feedAnimal nutrition1992

  Aquatic feed is Tongwei's original and defining business area. The company developed from a specialist aquatic-feed producer and supplies nutrition products for aquaculture operations. This business provides the agricultural foundation for Tongwei's broader portfolio and supports its continuing connection with fish farming, rural production, and aquaculture-related integrated projects.

• Livestock feedAnimal nutrition

  Tongwei also operates in livestock feed, extending its animal-nutrition activities beyond aquaculture. The feed business is significant to the company's identity and supplies production inputs rather than consumer-branded food. Its development reflects Tongwei's effort to achieve scale and diversification within agricultural products as competition affected margins in the original feed market.

• High-purity polysiliconPhotovoltaic materials2006

  High-purity polysilicon is a core upstream photovoltaic product for Tongwei. The company entered the sector in the 2000s and built capacity through its Yongxiang subsidiary and related industrial investments. Polysilicon production supplies the raw material used in crystalline-silicon solar manufacturing and enables Tongwei to participate in the photovoltaic value chain before cell production.

• Photovoltaic solar cellsSolar manufacturing2013

  Solar cells are Tongwei's principal downstream photovoltaic offering. The 2013 acquisition of LDK Solar Hi-Tech (Hefei) added cell and module manufacturing capability, complementing the company's polysilicon operations. Tongwei has subsequently been described as one of the world's largest solar-cell producers, serving the broader photovoltaic manufacturing market rather than selling primarily as a consumer-facing retail brand.

• Photovoltaic modulesSolar manufacturing2013

  Photovoltaic modules form part of the downstream manufacturing capability associated with Tongwei's solar business. The company acquired an operation that produced both cells and modules, although the reference material emphasizes Tongwei's scale in polysilicon and solar cells more strongly than its module business. Modules convert assembled solar cells into deployable electricity-generating panels.

• Aquaculture-photovoltaic systemsIntegrated agriculture and energy systems

  Tongwei has promoted projects that place photovoltaic facilities over or around aquaculture ponds. The concept seeks to combine power generation with fish farming, preserve agricultural use of the site, and potentially reduce operating costs. It represents a business model linking Tongwei's original aquaculture expertise with its renewable-energy manufacturing and development capabilities.

• Aquaculture plus photovoltaic development model

  China

  Tongwei promoted an integrated model in which solar installations are deployed over aquaculture ponds or alongside fish-farming operations. The concept links renewable electricity with agricultural production and was presented as relevant to rural development and more efficient land use.

  Outcome. Established a distinctive strategic narrative connecting the company's feed and aquaculture heritage with its photovoltaic business.

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• 2023Plan a major Ordos factoryStrategy

  The photovoltaic industry was experiencing price wars and declining profitability when Tongwei announced the expansion.

  What changed. Tongwei stated that it planned to invest approximately US$3.9 billion in a large factory in Ordos, Inner Mongolia.

  Aftermath. The plan indicated continued capacity expansion despite a more difficult pricing environment; the reference material does not establish its final completion status.

  Planned investment. US$3.9 billion planned (Announced December 2023)

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• 2013Acquire LDK Solar Hi-Tech (Hefei)M&A

  Tongwei sought downstream photovoltaic manufacturing capacity to complement its internally produced polysilicon.

  What changed. Tongwei acquired the LDK Solar Hi-Tech (Hefei) solar-cell and module manufacturing unit.

  Aftermath. The transaction strengthened vertical integration across polysilicon, solar cells, and modules.

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• 2007Acquire a polyvinyl chloride factoryM&A

  Tongwei was building an industrial base for its new photovoltaic and polysilicon activities.

  What changed. The company acquired a factory producing polyvinyl chloride, a material relevant to polysilicon production.

  Aftermath. The acquisition supported Tongwei's attempt to develop upstream photovoltaic-material capabilities.

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• 2006Enter the photovoltaic industryStrategy

  Feed-market competition had reduced margins, while Chinese policy was increasingly emphasizing pollution reduction and clean energy.

  What changed. Tongwei diversified from agricultural feed into photovoltaic manufacturing and materials.

  Aftermath. The move eventually developed into a major polysilicon and solar-cell business, although the early years involved substantial operational and market challenges.

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• 2023Maxeon filed a patent-infringement lawsuit against Tongwei

  Maxeon Solar Technologies filed a lawsuit concerning alleged infringement of patent rights related to shingled solar-cell panel technology.

  Lawsuit
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• 2023Tongwei joined the Fortune Global 500

  Tongwei appeared on the Fortune Global 500 list for the first time, ranked 476th.

  Other
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• 2023Tongwei announced a planned Ordos photovoltaic investment

  The company announced plans for a large factory in Ordos, Inner Mongolia, during a period of intense price competition and weakening profitability across the photovoltaic industry.

  Other
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• 2020Flood warning temporarily closed Tongwei's Leshan polysilicon plant

  Tongwei's Yongxiang subsidiary was forced to close a 20,000-tonne Leshan plant because of a flood warning, temporarily affecting a substantial portion of its polysilicon capacity.

  Other
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• 2019Liu Shuqi succeeded Liu Hanyuan as chairwoman

  Liu Shuqi became chairwoman of Tongwei Company after Liu Hanyuan stepped down from the chairmanship.

  Leadership change
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• 2013Tongwei acquired LDK Solar Hi-Tech (Hefei)

  The acquisition added solar-cell and module manufacturing capability and strengthened vertical integration between polysilicon and downstream photovoltaic production.

  M&A
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• 2007Tongwei acquired a polyvinyl chloride factory

  Tongwei acquired a factory producing polyvinyl chloride, supporting its developing polysilicon and photovoltaic strategy.

  M&A
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• 2006Tongwei expanded into photovoltaic manufacturing

  The company entered the photovoltaic industry as part of a diversification strategy beyond feed.

  Other
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• 2004Tongwei listed on the Shanghai Stock Exchange

  Tongwei completed its initial public offering and became listed on the Shanghai Stock Exchange.

  Other
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1. Tongwei Company
2. Tongwei official website