Yon Yu Electric Co., Ltd. — Your Trusted Partner in Electrical Safety

Over Four Decades of Engineering Excellence

Founded in 1979 in Tainan, Taiwan, Yon Yu Electric Co., Ltd. is a leading manufacturer specializing in industrial wiring devices and electrical connectivity solutions under our renowned brand, "LONG KUANG". Backed by advanced R&D capabilities, precision tooling expertise, and diversified product lines, we deliver reliable, high-performance products worldwide and offer flexible OEM/ODM manufacturing services.

Our Core Product Portfolio:

• NEMA Locking Type Plugs, Receptacles & Connectors
• Heavy-Duty Grounded Plugs & Receptacles
• Industrial Switches & Heavy-Duty Stainless Steel Wall Plates
• Fuse Seats, Terminal Blocks, and Electrical Accessories

Certified Quality & International Safety Standards

Driven by our core philosophy—"Quality First, Customer Satisfaction Always"—Yon Yu Electric is committed to stringent manufacturing excellence:

• ISO 9001 Certified Management: Integrated in 2000, our ISO 9001 quality assurance system governs every stage of production, from automated material distribution to final quality inspections.
• Global Safety Approvals: To meet the highest global standards, our core product series are certified with UL (Underwriters Laboratories) certification for North American markets and BSMI certification in Taiwan, guaranteeing maximum durability, electrical safety, and peace of mind.

Yon Yu Electric continues to innovate and maintain rigorous quality control, ensuring long-term sustainability and mutually beneficial partnerships across the globe.

Production Line	Parts Stocking Area

Automatic Material Distribution Area	Quality Inspection	Finished Product Stocking Warehouse	Production Line