1990
Jiangsu Huadong Microwave Instrument Plant (the original company of CEEG) was founded
1994
Entered the transformer industry
1999
Became a pioneer in China by collaborating with DuPont to develop the Nomex® paper dry-type transformer
2001
Signed a strategic cooperation agreement with DuPont
2003
Received the "China Eco-Friendly Enterprise" and "China Eco-Friendly Product" awards from China's State Environmental Protection Administration
2004
Won the DuPont Global Sales Award
2005
Awarded “China's Famous Product” and “National Inspection-Free Product” by the General Administration of Quality Supervision, Inspection and Quarantine of China
- Signed a strategic agreement with Schneider Electric
2006
Received the “Chinese Brand Annual Awards No.1”
2007
China Sunergy launched its IPO, trading on NASDAQ
2008
Awarded the “China Well-Known Trademark”
2011
Awarded as one of Asia's Top 500 Brands
2012
Expanded strategic cooperation with DuPont in transformers, photovoltaics, and new materials.
- Became a certified supplier for Rio Tinto Group
2016
China Sunergy's U.S. factory was established
2018
Signed an authorization letter for DuPont’s ReliatraN® brand
2019
Began digital transformation and upgrading with the successful launch of the CEEG IoT Cloud Platform.
- Developed the harmonic-resistant dry-type distribution transformer
2021
The 220kV power transformer rolled off the production line
- Developed the SC13-25000/35 energy-saving transformer
2023
The ZHSS-12000/35 24-pulse IGBT hydrogen rectifier transformer developed by CEEG contributed to the grid connection of China's first 10,000-ton-level green hydrogen production project
- passed CNAS (China National Accreditation Service for Conformity Assessment) certification
