After extensive searching and research, we found no directory of Chinese 110kV transformer manufacturers that was especially comprehensive. To help those interested in transformers better understand China’s 110kV transformer market and the manufacturers operating in it, we put together this overview.
Our approach was to collect the Chinese 110kV transformer manufacturers that are most frequently reported on — roughly 300 companies in total, representing the core of China’s 110kV main-transformer production capacity. However, many of these companies don’t maintain their own websites and aren’t active in public promotion, so we weren’t able to quickly gather detailed information on them. This directory focuses on the 86 manufacturers among them that do have an official website (in Chinese, English, or both), with each company’s website included so readers can look into China’s leading 110kV transformer manufacturers in more depth. Every one of these websites has been individually verified.
Based on what we’ve observed, no search engine currently surfaces a directory of Chinese 110kV transformer manufacturers with broader coverage than this one. Directories on other sites are typically framed as “China’s Top 10 Transformer Manufacturers” posts, and their coverage falls well short of what’s compiled here. We therefore believe this directory offers a genuinely valuable reference for buyers worldwide sourcing oil-immersed main transformers at 110kV, 120kV, 132kV, and similar voltage classes. We’ll continue tracking manufacturers that meet our criteria and keep updating this directory going forward.
Zhongxin General has also been manufacturing 110kV oil-immersed main transformers for many years, and is currently building a 120kV main transformer substation in the DR Congo. One of our recent project highlights is a 63,000 kVA 110kV main transformer commissioned last year in Ningxia, which has run stably ever since and earned positive feedback from the client — who has since decided to deepen the partnership with us. Through project collaborations like this one, we hope to build similarly deep partnerships with our international customers going forward; we’ve covered this project in detail in another post.
If you have main transformer requirements, or would like to discuss the industry or exchange updates, feel free to reach out to us.
Manufacturers already qualified to build transformers at 220kV and above are, by definition, also capable of 110kV production, so they are not repeated here. For those companies, see our guides to China’s 220kV–500kV transformer manufacturers and 500kV+ ultra-high-voltage manufacturers.
Manufacturer Directory
| North China | |
| Manufacturer | Official Website |
| Beijing Huatai Transformer (Wolong Electric) | https://byqsc.net/index.php?homepage=wlht |
| Beijing SOJO Electric Co., Ltd. | http://en.sojoline.com/ |
| Baoding Tianwei Baoqian Electric Power Equipment | https://www.tianweibq.com/gy.asp |
| Baoding Tianwei Huarui Electric | http://www.hbtwhr.com/ |
| Baoding Yiyuanda Electric Power Equipment | http://www.bdyyd.com/ |
| Hebei High Crystal Electrical Equipment Co., Ltd. | http://www.hbgjdq.com/?p=178 |
| Xingtai Transformer Co., Ltd. | http://www.hbxtbyq.com/ |
| KE (Colin/Sinokee) Electric Co., Ltd. | https://www.sinokeelectric.com/ |
| Cangzhou Tianli Transformer Co., Ltd. | http://www.cangzhoutianli.com/guanyu/index.html |
| Shanxi Jida Electric Power Co., Ltd. | https://www.sxjddq.cn/product/36/ |
| Shanxi Yawei Transformer Co., Ltd. | http://www.ywbyq.cn/index.html |
| Shanxi Alan Group Co., Ltd. | http://alan-group.com.cn/en/ |
| Shenyang Shenxi Transformer Manufacturing Co., Ltd. | http://www.sxbyqgs.com/ |
| Liaoning Yawei Electric Co., Ltd. | https://www.yw-ln.com/en |
| Shenyang Tiantong Electric Co., Ltd. | https://en.ttdl.cn/ |
| Jinzhou Transformer Co., Ltd. | https://b2b.bjx.com.cn/8471455/index.html |
| Jinzhou Xinsheng Transformer Co., Ltd. | https://dz.hc23.com/company/197438.html |
| Liaoning Taifeng Electric Co., Ltd. | https://www.tftr.com.cn/jieshao/ |
| Dalian Xinda Transformer Co., Ltd. | https://www.byqsc.net/com/dlxdbyq/ |
| Huludao Electric Power Equipment Co., Ltd. | http://www.hlddl.net/en |
| Liaoning Huaye Group Co., Ltd. | http://en.huaye.com.cn/ |
| Liaoning-EFACEC Electrical Equipment Co., Ltd. | https://www.leeec.com/ |
| Changchun Sanding Transformer Co., Ltd. | http://www.sanding.com/en/index.php |
| Chenglai Electric Technology Co., Ltd. | https://www.cl-dq.com/about.html |
| Heilongjiang Sanjiang Transformer Co., Ltd. | http://hljbyq.com/ |
| East China | |
| Manufacturer | Official Website |
| CHINA ZBB Group Shanghai Transformer Co., Ltd. | https://www.zbb.cc/indexEn.do?index |
| Shanghai Shupei Electric Group Co., Ltd. | http://www.shspdq.com/index.asp |
| SH-Delixi Group Co., Ltd. | http://www.sh-delixi.com/en/index.aspx |
| Shanghai Electric Group (Zhangjiagang) Transformer Co., Ltd. | https://www.shanghai-electric.com/listed_en/ |
| Wuxi Power Transformer Co., Ltd. | http://www.wx-transformer.com/ |
| Jiangsu Ryan Electric Co., Ltd. | https://www.redq.cc/en |
| Jiangsu Yawei (Nantong Yawei) | https://www.ntyw.net/ |
| Kerun Intelligent Control Co., Ltd. | https://www.krgroup.cn/en/ |
| Shenda Electric Group Co., Ltd. | https://www.shenda.com/ |
| Zhejiang Baowei Electric Co., Ltd. | http://www.zjjstb.com/ |
| Zhejiang Jiangshan Yuanguang Electric Co., Ltd. | https://en.ieccn.com/ |
| Zhejiang Power Transformer Co., Ltd. | https://www.zhebian.com.cn/ |
| Tianan Electric (Ningbo Tianan Group) | https://en.tianan.com/?lang=en |
| China Galaxy Electric Technology Co., Ltd. | https://www.yindian.cn/index.php/en/home/ |
| Zhongke Electric Power Equipment Group Transformer Co., Ltd. | http://www.zkbf.com.cn/index.aspx |
| Yifa Holding Group | https://www.yifachina.com/ |
| Jiangxi Substation Equipment Co., Ltd. | http://www.peoplejbgs.com/ |
| Jiangxi Transformer Technology Co., Ltd. (Jiangbian Technology) | http://en.jbkj.net/?lang=en |
| Jiangxi Guoxiang Electric Power Equipment Co., Ltd. | http://www.en.jxguoxiang.com/ |
| ShanDong LuNeng Mount.Tai Electric Equipment Co., Ltd. | http://www.ltds.com.cn/english_web/index.aspx |
| Shandong Electric Power Equipment Group Co., Ltd. | https://www.sddgdq.cn/product |
| Shandong Jinmanke Electric Group Co., Ltd. | https://www.sdsjmc.com.cn/ |
| Shandong Huake Electric Co., Ltd. | https://www.sdhuake.cn/ |
| Shandong Huachi Transformer Co., Ltd. | https://www.sdhuachi.cn/ |
| Shandong Longma Electrical Equipment Co., Ltd. | http://www.lmdqzz.com/en/ |
| Shandong Changneng Transformer Manufacturing Co., Ltd. | http://www.ydggc.com/ |
| Shandong Xin Da (Brothers) Transformer Co., Ltd. | http://www.xdbyq.com/en/ |
| Tatung Company | https://tatung.com/en/ |
| South China | |
| Manufacturer | Official Website |
| Henan Tongniu Transformer Co., Ltd. (Luoyang Tongniu Electric Group) | http://www.hntongniu.com/ |
| Luoyang Xingniu Transformer Co., Ltd. | http://www.hnxingniu.com/ |
| Henan Diteli Electric Co., Ltd. | https://www.ditelielectric.com/ |
| Shenda Electric Group Co., Ltd. (Jingzhou/Jiangling) | https://www.shenda.com/index.aspx |
| Hunan Hongye Transformer Co., Ltd. | http://en.hongyetransformers.com/ |
| Hunan Huaxia Tebian Co., Ltd. | https://hxtzbyq.com/ |
| Guangzhou Guanggao High Voltage Electric Apparatus Co., Ltd. | https://www.gz-gg.com/ |
| Pearl Electric Co., Ltd. | https://pearlelectric.com/ |
| Liuzhou Baian Transformer Co., Ltd. | https://en.transformermfg.com/ |
| Jinpan Technology (JST) Co., Ltd. | https://jstpower.com/ |
| West China | |
| Manufacturer | Official Website |
| Chongqing Nari Boray Transformer Co., Ltd. | https://www.byqsc.net/com/cqnrbrbyq/ |
| Chongqing Chongbian Electric Co., Ltd. | https://www.cqtransformer.com.cn/ |
| Sichuan Zhongxin General Electric Energy Co., Ltd. | https://zxtransformer.com/ |
| Sichuan General Electric Power Co., Ltd. | http://www.sctoyo.cn/ |
| Yawei Electric (Chengdu) Group Co., Ltd. | https://scyawei.com/ |
| Sichuan Xingchuan Transformer Co., Ltd. | http://www.scbyq.com.cn/index.php |
| Sichuan Shengxinyuan Electrical Equipment Manufacturing Co., Ltd. | http://www.sxydq.com/ |
| Yunnan Transformer Electric Co., Ltd. | https://www.yntec.com/subsiteIndex/mainen.html |
| Tongbian Electric Co., Ltd. | http://www.tbdqcn.com/introduce_1/1.html |
| Shaanxi Shante Transformer Co., Ltd. | http://www.shantebyq.com/ |
| Gansu Hongyu Transformer Co., Ltd. | http://www.qhbianyaqi.com/ |
| Wolong Electric Yinchuan Transformer Co., Ltd. | http://www.nxycb.com.cn/ |
| Ningxia Lebian Transformer Co., Ltd. | http://www.nxlb.net/ |
| Xinjiang Zhongtai Special Power Equipment Co., Ltd. | http://www.xjssgf.com/index.php/index.html |
North China
Beijing
Beijing Huatai Transformer (Wolong Electric)
Beijing Huatai Transformer traces back to the original Beijing Transformer Factory, which already possessed 110kV transformer manufacturing technology in its early years. In April 2009, Wolong Electric restructured it into Wolong Electric Group Beijing Huatai Transformer Co., Ltd.
Beijing SOJO Electric Co., Ltd.
Wuxi Power Transformer already had 110kV production and sales capability on its own. In 2016, SOJO Electric acquired a 70% stake in Wuxi Power Transformer, bringing that company’s capacity and product line — including 110kV transformers — into its own consolidated business.
Hebei
Baoding Tianwei Baoqian Electric Power Equipment
The company relies on the transmission-and-distribution high-tech platform of the former Tianwei Group, which was itself reorganized from the Baoding Transformer Works. Baoding Transformer Works had a history of 110kV transformer production, and Tianwei Baoqian’s 110kV technology descends from it.
Baoding Tianwei Huarui Electric
Also built on the former Tianwei Group’s transmission-and-distribution platform and tracing to the same Baoding Transformer Works lineage, Tianwei Huarui’s 110kV technology has the same origin as Tianwei Baoqian’s.
Baoding Yiyuanda Electric Power Equipment
A Baoding-based power equipment manufacturer with more than a decade of transformer production experience.
Hebei High Crystal Electrical Equipment Co., Ltd.
In January 2015, High Crystal successfully rolled out its S13-type 110kV three-phase oil-immersed stereo wound-core power transformer, and the company standard it set was later adopted as a Hebei provincial standard. In December 2015, its 110kV stereo wound-core transformer production project won a national torch-plan industrialization demonstration project certificate.
Xingtai Transformer Co., Ltd.
Founded from the former Xingtai Transformer Plant, established in 1970, and formally registered as a limited liability company on May 25, 1990; its 110kV transformer production developed gradually after that point.
KE (Colin/Sinokee) Electric Co., Ltd.
In 2016, the company built and commissioned the “Colin Electric Tiankun 110kV Substation” project, which included a 110kV furnace transformer, and continued expanding its capability from there.
Cangzhou Tianli Transformer Co., Ltd.
Founded in 1995, the company gradually developed the capability to produce a full range of transformers including the 110kV class.
Shanxi
Shanxi Jida Electric Power Co., Ltd.
Completed business registration on March 30, 2003, restructured from the former Shanxi Jida Transformer Co., Ltd., with 110kV production qualifications and capability from the point of establishment.
Shanxi Yawei Transformer Co., Ltd.
Founded September 13, 2013, in the Taiyuan/Comprehensive Reform Zone area, producing a range of power transformers including 110kV and 220kV large high-voltage units.
Shanxi Alan Group Co., Ltd.
The company’s core team first assembled in 2003; after eight years of development it formally registered on August 1, 2011, and holds 110kV transformer manufacturing technology.
Liaoning
Shenyang Shenxi Transformer Manufacturing Co., Ltd.
Through increased investment in technical R&D, Shenxi has raised the technical content and market competitiveness of its products. In 2024, its 110kV transformer production and testing capability upgrade project was formally registered with Shenyang’s municipal industry and information technology authority.
Liaoning Yawei Electric Co., Ltd.
Its product line includes 110kV transformers; the company’s newly launched “E-series” products lead in loss and partial-discharge performance.
Shenyang Tiantong Electric Co., Ltd.
Founded in 1993 and producing transformers since its establishment; the company had 110kV transformer production and supply capability by the early 2000s, which continues today.
Jinzhou Transformer Co., Ltd.
Descended from the original Jinzhou Transformer Works, founded in 1958, with many years of transformer manufacturing experience and 110kV-and-below production capability; won a State Grid 110kV substation project bid as a supplier in 2015.
Jinzhou Xinsheng Transformer Co., Ltd.
Descended from the Liaoning Provincial Jinzhou Transformer Electric Furnace Plant, established in 1952. A 2002 relocation brought a full technical upgrade of facilities, equipment, and testing gear, providing the equipment and technical basis for its 110kV-and-above production.
Liaoning Taifeng Electric Co., Ltd.
Founded in 2008, with qualifications and capability for large 110kV-and-below power transformers, and continuing technical upgrades and capacity expansion in recent years. In 2025 its SSZ22-63000kVA/110-NX1 main transformer passed TÜV Rheinland (Germany) certification, meeting IEC and EU CE standards.
Dalian Xinda Transformer Co., Ltd.
Traces back to the Dalian Transformer Works, established in 1956 — the plant designated by the former Ministry of Machine-Building Industry as a main producer of 110kV-and-below transformers — giving the company a 110kV production history dating to the 1950s.
Huludao Electric Power Equipment Co., Ltd.
A China national key high-tech enterprise founded in October 1969, a key Liaoning provincial enterprise with 53 years of factory history, whose main products include 110kV transformers.
Liaoning Huaye Group Co., Ltd.
A national high-tech enterprise founded in 1992, with 110kV transformers as one of its conventional flagship products.
Liaoning-EFACEC Electrical Equipment Co., Ltd.
Founded in 1994; as the company’s business expanded, it developed a 110kV product line.
Jilin
Changchun Sanding Transformer Co., Ltd.
Founded in 1952, a former key enterprise of the Ministry of Machine-Building Industry. In 1975 it became a designated 110kV power transformer production base, and its first 110kV unit — an SFSZL-20000/110 — rolled off the line that year.
Chenglai Electric Technology Co., Ltd.
Founded in 1970 and producing power transformers since establishment; a State Grid-designated qualified supplier of 110kV power transformers.
Heilongjiang
Heilongjiang Sanjiang Transformer Co., Ltd.
Founded in 1966, with manufacturing capability for 110kV-and-below transformers, and ranking among the leading producers of below-110kV transformer manufacturing capacity in the province.
East China
Shanghai
CHINA ZBB Group Shanghai Transformer Co., Ltd.
Founded September 2006, positioned from its founding as a manufacturer of 110kV-and-below power transformers.
Shanghai Shupei Electric Group Co., Ltd.
Founded in 2003, with 110kV-and-below power transformers established as a core product line for R&D and production from the outset.
SH-Delixi Group Co., Ltd.
Founded in 1998. In 2013, the company’s transformer division received an order for two 110kV transformers and successfully completed delivery of that batch.
Shanghai Electric Group (Zhangjiagang) Transformer Co., Ltd.
Founded in 2019. In 2021, the company successfully developed its first 110kV-class energy-saving oil-immersed furnace transformer (HKSfpz-25500/110) and passed all routine tests on the first attempt.
Jiangsu
Wuxi Power Transformer Co., Ltd.
Founded in 1967 as the Wuxi Power Transformer Plant, renamed in 2005. Its self-designed and manufactured SF10-160000kVA/110kV transformer has passed short-circuit-withstand testing at the National Transformer Quality Supervision and Inspection Center.
Jiangsu Ryan Electric Co., Ltd.
Founded in 2007. In 2021, the company successfully developed its first 110kV three-phase epoxy-cast dry-type power transformer, which passed new-product technical appraisal that same year at an internationally advanced performance level.
Jiangsu Yawei (Nantong Yawei)
Founded in March 1992, with over a decade of specialized transformer manufacturing history. In 2009 the company acquired new land and built a 110–220kV power transformer workshop, which entered production in September 2009 — marking its entry into large ultra-high-voltage 110kV transformer manufacturing.
Zhejiang
Kerun Intelligent Control Co., Ltd.
Engaged in transformer R&D and production since its founding in 2004, with 110kV transformers as a conventional product.
Shenda Electric Group Co., Ltd.
Founded in 2000, initially producing mainly 35kV-and-below transformers before formally entering 110kV transformer production in 2006.
Zhejiang Baowei Electric Co., Ltd.
In 1998, the company introduced advanced research results from the Shenyang Transformer Research Institute and began producing 110kV-and-below power transformers, and was later included by the State Economic and Trade Commission in its second batch of recommended manufacturers for national rural and urban grid construction and renovation equipment.
Zhejiang Jiangshan Yuanguang Electric Co., Ltd.
Formerly the Jiangshan Sanling Special Transformer Plant, the company already had an early foundation in 110kV-class transformer production, and in 1992 became a designated 110kV-class transformer production plant under the former Ministry of Machinery and Electronics Industry.
Zhejiang Power Transformer Co., Ltd.
Founded in 1996, producing 110kV transformers from its establishment and maintaining them as a core flagship product ever since.
Tianan Electric (Ningbo Tianan Group)
Its predecessor, “Linhai Comprehensive Cooperative,” was founded in 1969; after restructuring, Ningbo Tianan Group was formally established in 1994. In 2002, four 110kV-and-above high-voltage electrical products passed national appraisal, and its 110kV SF6 circuit breaker was launched on the market for the first time.
China Galaxy Electric Technology Co., Ltd.
Its predecessor, Zhejiang Galaxy Transformer Co., Ltd., was founded in 1999, specializing in 220kV-and-below power transformers.
Anhui
Zhongke Electric Power Equipment Group Transformer Co., Ltd.
Formally established in 2019 in Bengbu, already holding 110kV power transformer manufacturing qualifications and production capability at the time of founding.
Jiangxi
Yifa Holding Group
A 2010 key city-backed investment project of Fuzhou, mainly producing 110kV and 220kV ultra-high-voltage oil-immersed transformers and similar products, with production continuing in recent years.
Jiangxi Substation Equipment Co., Ltd.
Founded in 1968. Products include sealed, energy-saving 110kV-and-below oil-immersed power transformers up to 31,500kVA; its S11-M fully-sealed oil-immersed transformer won a Jiangxi provincial excellent new-product award in 2001.
Jiangxi Transformer Technology Co., Ltd. (Jiangbian Technology)
Engaged in transformer R&D and manufacturing since 1954. In 1968, the transformer branch of Jiangxi Electric Machinery Plant — the predecessor of Jiangxi Transformer Plant — successfully trial-produced the province’s first 110kV power transformer, which was successfully put into operation.
Jiangxi Guoxiang Electric Power Equipment Co., Ltd.
Founded in 2016, with its product range including 110kV-class dry-type transformers from the outset — a core business planned from the company’s founding.
Shandong
ShanDong LuNeng Mount.Tai Electric Equipment Co., Ltd.
Formally established in 2009 in Tai’an, recognized as one of China’s backbone 110kV transformer manufacturers, covering the 10kV–110kV voltage range, with 110kV-and-below dry-type transformers as a regular product.
Shandong Electric Power Equipment Group Co., Ltd.
In 1970, the company’s predecessor, Shandong Electric Power Equipment Plant, successfully trial-produced a 110kV transformer — an early breakthrough for the plant in the 110kV field.
Shandong Jinmanke Electric Group Co., Ltd.
Predecessor was the state-owned Shandong Jinxiang Transformer Plant, founded in 1967, a designated power-transformer production enterprise under the former Ministry of Machinery Industry. Restructured into a joint-stock enterprise in 1993 and renamed accordingly. In 1999, the company’s world-first 110kV-class resin-cast dry-type power transformer passed testing at the National Transformer Quality Inspection Center.
Shandong Huake Electric Co., Ltd.
Predecessor was the state-owned “Chengwu Electromechanical Equipment Plant,” founded in 1989, with more than 30 years of transformer manufacturing experience. Shandong Huake Electric Co., Ltd. was formed in 2019 through the merger and restructuring of its predecessor entities, with its 110kV manufacturing capability rooted in that long technical accumulation.
Shandong Huachi Transformer Co., Ltd.
Founded in 2005. Its 110kV-class transformer passed a full national-level type test in 2009 at an internationally leading level, and won the Shandong Famous Brand Product designation the same year.
Shandong Longma Electrical Equipment Co., Ltd.
Formally established June 1, 2018. Its 110kV transformer passed PCCC product certification in 2023, indicating that by late 2023 the model held production qualifications and had entered the market.
Shandong Changneng Transformer Manufacturing Co., Ltd.
Formerly the Liaocheng Transformer Plant, which successfully developed and produced 110kV-class transformers in 1995.
Shandong Xin Da (Brothers) Transformer Co., Ltd.
Founded in 2011, with 110kV transformers among its products.
Taiwan Province
Tatung Company
Began manufacturing power transformers in 1964, establishing the foundation for its 110kV-class production. In 1984, the company went on to manufacture a domestically developed 345kV, 500MVA ultra-high-voltage transformer, demonstrating technical capability well beyond the 110kV class. A 2014 industry report also confirmed this milestone — “Taiwan’s first 345kV oil-immersed transformer, launched in 1984” — noting that 345kV remained the province’s highest transformer voltage class for the following 30 years.
South China
Henan
Henan Tongniu Transformer Co., Ltd. (Luoyang Tongniu Electric Group)
Founded in 2007. In 2013, the company developed a 110kV-class energy-saving on-load tap-changing power transformer.
Luoyang Xingniu Transformer Co., Ltd.
Specializes in R&D and manufacturing of special transformers; founded in 2008, and has produced 110kV transformers since its founding.
Henan Diteli Electric Co., Ltd.
Its predecessor, “Pingdingshan Diteli Electric Co., Ltd.,” was founded March 7, 2008, and formally renamed “Henan Diteli Electric Co., Ltd.” in 2014. From its early development, the company’s product range clearly covered the 110kV voltage class.
Hubei
Shenda Electric Group Co., Ltd. (Jingzhou/Jiangling)
Founded in 2000. In 2006, the company invested 18 million RMB in a 110kV-class special transformer technical upgrade and expansion project, moving into higher-voltage, larger-capacity transformer manufacturing and gradually leaving behind a history of producing only 35kV-and-below transformers.
Hunan
Hunan Hongye Transformer Co., Ltd.
Had 110kV transformer production capability by the early 2000s, with actual production and on-grid operation of 110kV-class transformers achieved around 2005.
Hunan Huaxia Tebian Co., Ltd.
Founded in 2002, engaged in transformer manufacturing from its establishment. As the company’s technology matured and its manufacturing capability improved, it gradually expanded its product line, beginning R&D and production of 110kV power transformers in the mid-to-late 2010s as an important product in its high-voltage transmission-and-transformation business.
Guangdong
Guangzhou Guanggao High Voltage Electric Apparatus Co., Ltd.
The Guangzhou High Voltage Electric Apparatus Plant was founded in 1958; after completing state-owned enterprise reform in 2000, it became Guangzhou Guanggao High Voltage Electric Apparatus Co., Ltd. and began fully expanding its 110kV transformer R&D and production.
Pearl Electric Co., Ltd.
The Panyu Electric Machinery General Plant was founded in 1958. In 1998 the company restructured into Guangzhou Panyu District Pearl Electric Co., Ltd. In August 2000, its first SFZ9-40000/110 high-reliability power transformer passed national appraisal.
Guangxi
Liuzhou Baian Transformer Co., Ltd.
Founded in 2006 as a joint-stock limited liability company, positioned from its founding around the design, manufacturing, and sales of 110kV-and-below power transformers, with 110kV production qualifications.
Hainan
Jinpan Technology (JST) Co., Ltd.
Founded in 1997, initially producing mainly 35kV transformers and specializing long-term in dry-type transformers. Around 2008, as industry competition intensified and cost pressures grew, Jinpan began a technical breakthrough into the higher 110kV voltage class, gradually achieving the leap from 35kV to 110kV.
West China
Chongqing
Chongqing Nari Boray Transformer Co., Ltd.
Registered in May 2012, continuing the 40-plus-year design and manufacturing history of the former Fuling Transformer Plant, with 110kV transformers positioned as a core flagship product line from its founding; its 110kV transformer has also received China Quality Certification Centre energy-efficiency product certification.
Chongqing Chongbian Electric Co., Ltd.
The Chongqing Transformer Plant was founded in 1927, giving the company over 90 years of transformer manufacturing history. A former key enterprise of the Ministry of Machine-Building Industry, it was once named one of China’s ten major 110–220kV transformer manufacturing plants; Chongqing Chongbian Electric Co., Ltd. was renamed from Chongqing Transformer Plant in August 2007.
Sichuan
Sichuan Zhongxin General Electric Energy Co., Ltd.
Zhongxin General was founded in 2017, led by a core team headed by industry veterans with over 40 years of experience in the power transmission and distribution sector. Over the years since, we’ve built up mature production capacity across 132kV-and-below oil-immersed main transformers, 35kV/20MVA-and-below dry-type transformers, 35kV and 10kV high-voltage and low-voltage switchgear, prefabricated box-type substations, prefabricated cabin-type substations, and large-scale industrial and commercial energy storage systems — along with our own supporting engineering and construction team. Our newly built energy storage production base, spanning over 30,000 square meters, is set to come online by the end of 2026.
Sichuan General Electric Power Co., Ltd.
Founded in 2006, with planning and technical groundwork for 110kV transformer production in place from its early stage.
Yawei Electric (Chengdu) Group Co., Ltd.
Founded in 2023. Since its founding, the company has planned R&D and production of 110kV-class high-voltage transformers.
Sichuan Xingchuan Transformer Co., Ltd.
Founded January 12, 2009, restructured and spun off from the former state-owned Sichuan Transformer Plant. The former Sichuan Transformer Plant was designated by the National Bureau of Machinery Industry as a 110kV transformer production enterprise; after its 1999 restructuring, that technical capability was inherited by the new company. Founder Huang Tianwu was previously an engineer at the original plant, bringing 110kV transformer production technology and experience with him.
Sichuan Shengxinyuan Electrical Equipment Manufacturing Co., Ltd.
Founded in 2011, engaged in power transformer R&D and manufacturing from its early stage, with a product range already including 110kV-and-below transformers. In 2019 the company completed a “110kV main transformer tank overhaul” project.
Yunnan
Yunnan Transformer Electric Co., Ltd.
The company’s headquarters was formally established in 2009, marking a new stage of development and full-scale layout of electrical equipment R&D and production. In 2012, its Yunnan Renmin Electric industrial park was completed and put into production, further improving production capability and technology to the point of holding the hardware conditions for 110kV-and-below power transformer production.
Tongbian Electric Co., Ltd.
Established in Kunming in 2007 as a wholly owned subsidiary of Yunnan Tongbian Electric Co., Ltd., whose own history traces to 1955. After its 2003 restructuring, a 110kV-rated large-capacity direct-connected electric furnace transformer it developed in 2007 won a Yunnan provincial science and technology progress award. Since 2007, Tongbian Electric has been positioned as a specialized manufacturer of 110kV-and-below power transformers, and its 110kV-class transformer product formally obtained a Grade-2 energy-efficiency type-test report in 2021.
Shaanxi
Shaanxi Shante Transformer Co., Ltd.
Founded in 2010 in Xi’an; from the company’s founding, its product range has clearly included the 110kV voltage class.
Gansu
Gansu Hongyu Transformer Co., Ltd.
Founded in 1999 in Lanzhou, positioned from its founding around the design, production, sales, and maintenance of power transformers, covering 110kV-and-below plateau-type power transformers.
Ningxia
Wolong Electric Yinchuan Transformer Co., Ltd.
Its predecessor, “Ningxia Transformer Plant,” was founded in 1968. Public information shows the company began supplying 110kV traction transformers to China’s domestic electrified railways starting in the 1990s, with development work on its first 110kV traction transformer launched in 1997.
Ningxia Lebian Transformer Co., Ltd.
Already had 110kV transformer production capability by 2008. According to the company’s own profile, its power transformers reach a maximum capacity of 63,000kVA at the 110kV voltage class, meet national standards, and passed China Machinery Industry quality-system certification in 2008.
Xinjiang
Xinjiang Zhongtai Special Power Equipment Co., Ltd.
Began producing 110kV transformers as early as 2009 or before, and in 2014 passed national-level testing to obtain State Grid network-access clearance, formally establishing batch-production capability at this voltage class.
What can we learn from this?
Lined up province by province, these roughly seventy companies show that 110kV is where China’s transformer industry is genuinely decentralized. Unlike the 500kV+ tier, there’s no single dominant player here — the qualification bar is lower and the customer base (regional grids, industrial parks, renewable projects) is local by nature, so a factory founded in 1927 and one founded in 2023 can sit on the same list as legitimate, active suppliers.
That’s an opportunity for buyers — real price and lead-time competition, often from a manufacturer close enough to visit — but also a risk, since company age alone says little about certification history or export track record. The real question isn’t which province a manufacturer sits in, but which specific test reports and certifications that factory can actually produce — worth checking directly, every time.
References
- https://www.ceeia.com/QYDT/d/201708/69842.html
- http://hbgjdq.com/?p=177&a=view&r=148
- https://news.bjx.com.cn/html/20160829/767457.shtml
- https://byqsc.net/com/jxby/introduce
- https://wap.cnki.net/touch/web/Journal/Article/JDGY1999S1007.html
- https://www.ca-sme.org/content/Content/index/id/3037
- http://rail.ally.net.cn/html/2007/guoneizixun_0416/7263.html#top
- https://www.chinatimes.com/realtimenews/20201210003404-260410?chdtv
