YIYEN HOLDING GROUP is a high-tech company that  focuses on researching and manufacturing power electronic  technology，integrating design, research and development,  manufacturing, sales and service.  YIYEN is dedicated to  reducing electricity costs, improving electricity efficiency, and  providing core power equipment and system solutions for  the energy Internet of Things. With electrochemical energy  storage and energy efficiency management as its core  industry, YIYEN provides energy-saving service for power  system, communication system, financial system, education  system, medical system, and large industrial and mining  enterprises.  Energy storage and energy efficiency management are  critical reducing carbon emissions and promoting sustainable  development.  YIYEN's mission is to help make energy  and ecology more harmonious by providing advanced  energy storage and power quality solutions which improve  efficiency, reduce costs, and promote clean energy. YIYEN  will always continue to devote ourselves to the research  and development and manufacturing of power electronic  technology, and be committed to delivering cutting-edge  solutions helping customers meet their energy management  goals while contributing to a more sustainable future for all.