Copper-bonded ground rods have been accredited UL certificate. Before shipment, our products have gone through many strict inspections to ensure the quality conforms to international standard. Our copper plated ground rods adopt standard quality Q235 low-carbon steel and 99.9% pure copper as the materials, after a complex cold-drawn procedure of the steel, the electrolytic copper is uniformly plated on the steel core. What makes our products more recognized is the thickness of the copper layer, which includes two types of 5mil and 10mil thickness and can also be customized according to customersí» requirements. we ensure our ground rods with excellent mechanical and electric conductivity performance and strong anticorrosive performance, In this way the finished ground rods will not crack ,peel or split when bent to straight angle . Copper bonded ground rods also can be processed with thread which can be made by our thread rolling model designed by ourselves in strict compliance with standard. We also produce our products according to customersí» specifications. according to requirements