Energy-metering products, single-phase and three-phase energy meters, IC card prepaid meters, ultrasonic water meters, and heat meters, are the field Zhejiang Yong Yang Technology Co., Ltd. leads, a national high-tech enterprise specializing in research, development, design, and manufacturing. Established in 2007 and located in Yueqing Economic Development Zone, Zhejiang, China, its products support smart-metering applications across utility, industrial, and residential customers, and producing most components in-house, including PCB cases and covers, it ensures quality control and cost efficiency. With advanced production and testing equipment, the company serves markets in Southeast Asia, Eastern Europe, North America, South America, and South Asia, holding certifications such as CE and exporting 31-40% of its products.