Mingguang Sanyou Electric Power Technology Co., Ltd. (hereinafter referred to as "Mingguang Sanyou") is a wholly-owned subsidiary of Sanyou Lianzhong Group Co., Ltd. (hereinafter referred to as "Sanyou Lianzhong"). The company is committed to the research and development, production and sales of magnetic latching relays for electric power and electric energy meters of the group. The company is one of the main drafting units of the domestic magnetic latching relay standards for electric energy meters, and widely provides relay parameters and structures for many well-known electric meter factories at home and abroad.