Siemens (in 1847 in Germany, one of the largest electromechanical/electrical engineering and electronics companies in the world, one of the world's top 5 enterprises, Jinan Siemens Transformer Co., Ltd.)
ABB (committed to providing solutions for customers in industrial and power industries, a global leader in power and automation technology, Global top 5, ABB (China) Co., Ltd.)
Schneider (with a glorious history of more than 17 years, a global energy efficiency management expert, specializing in power and automation management, Schneider Electric (China) Co., Ltd.)
Mitsubishi (founded in 187 in Japan, a Fortune 5 company, devoted to the research and development of cutting-edge technology and expertise, Mitsubishi electric (China) Co., Ltd.)
TBEA (China's largest transformer product development base, key enterprise of major equipment manufacturing industry, high-tech enterprise, national protected trademark, TBEA Co., Ltd.)
Xidian XD (established in 1959, China's largest and most complete set of high-voltage transmission and distribution equipment and other electrical products manufacturing base, Xd group, China)
CLP Electric (a world-class power transmission and distribution and new energy supplier, a national protected trademark, once won a famous brand in China, an influential brand, CLP Electric Group Co., Ltd.)
Toshiba Toshiba (a Sino-Japanese joint venture with a history of 1 years of transformer manufacturing, a high-tech enterprise, and top ten transformer brands, CLP Equipment Toshiba (Changzhou) Transformer Co., Ltd.)
Tianwei (a member of China Ordnance Equipment Corporation, a large-scale high-tech enterprise group, with a national technology development center and great strength, Baoding Tianwei Group Co., Ltd.)
Shunte Electric (a Sino-foreign joint venture, a world leader in dry-type transformer industry, a demonstration enterprise in electrical industry, a national high-tech enterprise, Shunte Electric Equipment Co., Ltd.)