Sanyou Corporation Limited is a Chinese company engaged in the research, development, manufacture, and sale of relays and current transformers. Its product range includes magnetic latching relays, general power relays, high voltage DC relays, new energy relays, photovoltaic relays, automotive relays, plug-in chokes, signal relays, and inductor products. These are used in home appliances, smart meters, industrial control, smart homes, communication facilities, automotive manufacturing, new energy and photovoltaic applications, and AI solutions. The company also provides transformer industry solutions such as metering, digital display meter, one-close type, relay protection, motor protection, and residual current transformers. Incorporated in 2008, it is headquartered in Dongguan, China.