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Being a nation-level High-Technology enterprise specialized in the R&D, manufacture and sales of capacitors in China, Nantong Sunion Electronics Co., Ltd. was established in 1995, and also long-term cooperates with “Southeast University” and “University of Electronic Science and technology of China”. Both parties have made a number of research achievements on basic materials of capacitors, special capacitor for power electronics and other fields.

“THREECON” brand covers power electronic film capacitor and aluminum electrolytic capacitor two product series, mainly provide services in industrial automation, energy-saving lighting, new energy, IT, communication, power quality, new energy automobile, rail transit, etc.

Because of the best quality and satisfied service, our company successfully passes the supplier certification of some well-known international corporations, like PHILIPS and GE etc. Become the qualified supplier in their global supply chains. Our company is now the council member of China Power Supply Society, and the member of China Association of Industrial Electrical Appliances and the products have won the honor of quality reliable product.

The operation system reliable quality of the company strictly follows the requirement of IATF16949∶2016 System, ISO14001 Environmental Protection system and QC080000 Hazardous Substance Control System, and the products are fully up to ROHS, UL certification and CE Safety Standard of EU Electro technical Commission requirement. 

The company always pays attention to technological innovation, we have won the honor of "Capacitor Engineering Technology Center of Jiangsu Province". As of 2018, the company owns 25 invention patents and 48 utility model patents.

Our goal: Become preferred brand of the capacitors for industrial automation, energy-saving lighting, IT, new energy and new energy automobile, etc of worldwide customers.