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Wuxi Electric Power Filter Co., Ltd

Wuxi Power Filter Co., Ltd.


Originally known as the Capacitor Research Institute of Wuxi Power Capacitor Factory, the company underwent restructuring in 1994 and was renamed Wuxi Power Filter Co., Ltd. In 1985, the company pioneered the design and production of high-voltage filter compensation devices in China. To date, it has provided over 600 sets of high and low-voltage filter compensation devices to customers across various regions. These products are widely used in industries such as power, metallurgy, chemical, mining, wastewater treatment, and cement, earning high praise for their performance and quality.


Since 1996, the company has focused on the design and production of capacitors with special requirements, such as filter capacitors, DC link capacitors, three-phase AC filter capacitors, overvoltage absorption capacitors, and pulse capacitors. Over the years, it has supplied a large number of high-quality products to industries including domestic rail transportation, high-voltage frequency converters, and new energy, making outstanding contributions to the localization of China's electric locomotives.


The company boasts three experts who enjoy special allowances from the State Council. Under their leadership, the capacitors and filter compensation devices designed and produced by the company have won nine ministerial and provincial-level scientific and technological achievements, as well as over twenty patented technologies.


Adhering to the corporate culture of "surviving by quality, developing through technology, and earning trust with service," and upholding the spirit of "achieving success through sincerity," the company is committed to providing customers with satisfactory products and excellent service.


  • Date of Establishment
    1994Year
  • Company Area
    8000Square Meters
  • Registered Capital
    2000Ten Thousand
  • Number of Employees
    105People
  • ​Corporate Vision
    01
    Corporate Vision
    Manufacture First-Class Products; Create Optimal Benefits; Share with Society and Employees.
  • Corporate Mission
    02
    Corporate Spirit
    Genuineness, Sincerity, Trustworthiness, Humility, Harmony, and Mutual Success.
  • Core Values
    03
    Core Values
    Quality is our foundation; technology drives our growth; service earns our reputation.
Development History
1994
1994
Company Establishment
1995
1995
“ Developed China's first DC-link capacitor, which was installed in the country's inaugural AC-DC-AC railway engineering vehicle.
2002
2002
Provided over 4,000 DC-link and AC filtering capacitors for the auxiliary power systems of the DC-AC converters in Hong Kong's MTR trains.
2011
2011
Successfully developed the then highest voltage-level DC4200V DC-link capacitor, which was successfully trialed on a 500 km/h high-speed train.
2013
2013
Successfully developed DC-link capacitors and secondary filtering capacitors for CRRC's new eight-axle locomotive (9600 kW), replacing foreign products.
2014
2014
” Began Mass Deployment
2017
2017
Successfully developed metal-free shell DC-link capacitors for the Harmony electric multiple units (EMUs).
2018
2018
Successfully developed AC/DC capacitors for the 250 km/h Fuxing standard EMUs, with two trains equipped for trial operation.
2019
2019
Equipped one train for trial operation on the Kunming-Shangri-La plateau route.
2019
2019
Successfully developed AC/DC capacitors for the 160 km/h Fuxing concentrated power EMUs.
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020

Quality Management

We fully implement the ​ISO 9001 Quality Management System and the ​STN EN 15085-2 International Welding System Certification. The company has established a series of quality objectives to form a comprehensive target system. Based on changes in actual conditions, we continuously improve the required values of these quality objectives. Under the guidance of the ​Quality Manual, we have developed a series of control procedures to ensure consistent quality and compliance with international standards. This systematic approach enables us to maintain high-quality standards and meet the evolving needs of our customers and industry requirements.

Company Qualifications

In 2019, the company was recognized as a ​High-Tech Enterprise, a testament to our commitment to innovation, advanced technology, and excellence in research and development.

Industry Position

The company is a **member unit of the Power Capacitor Committee of the China Electrotechnical Society**, highlighting our active participation and contribution to the advancement of power capacitor technology and industry standards.   -   Our products were awarded the ​First Prize for Scientific and Technological Progress in 2019 by the China Electric Power Research Institute (CEPRI), recognizing our innovation and excellence in advancing power technology.