Dongguan Sanyou Lianzhong Electric Appliance Co., Ltd. (hereinafter referred to as "Sanyou Lianzhong") is a professional national high-tech enterprise integrating relay R & D, manufacturing and sales, and one of the top 100 electronic components enterprises in China. At present, its subsidiaries include Dongguan Sanyou Lianzhong Electric Appliance Co., Ltd., Anhui Mingguang Sanyou Electronic Co., Ltd. and Ningbo Yongyou Electronic Co., Ltd The company, Shanghai Wanjia Lianzhong Electronics Co., Ltd., North America Sanyou Co., Ltd., South Korea Sanyou Co., Ltd. and other wholly-owned or holding subsidiaries, with more than 6000 employees.