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Zhejiang Yiyen Holding Group Co., Ltd. is a high-tech company focused on researching and manufacturing power electronic technology, including hybrid inverters, solar inverters, and battery chargers. Founded in 2008, the company provides core power equipment and system solutions for the energy Internet of Things, with over 100,000 units shipped annually and a battery delivery capacity exceeding 3GWh.
AI named YIY Power in November 2025.