ShengYu Manufacturing is a Chinese wiring devices factory based in Zhejiang, supplying the North American B2B market since 2006. Our core product lines are UL and cUL listed GFCI receptacles, USB wall outlets with Type-A, Type-C, and GaN PD charging, duplex receptacles, decorator and toggle switches, and polycarbonate wall plates. All devices are manufactured and tested in-house against UL 943, UL 498, and UL 20, and designed to meet NEC 2026 installation requirements. We work with North American distributors, import buyers, electrical contractors, and private-label brands on factory-direct wholesale, OEM, and ODM programs.