http://www.chinagroundrod.comExport DepartmentLili LiliPhone: 86 - 575 - 86557338/+86 - 57586557338Fax: 86 - 575 - 86557068
Lightning Protection TechnologyXinchang, ZhejiangChina, 312500Web Page Link: http://www.toboc.com/zhejianghuadianlightningprotection
"Drill head is made of the high strength steel 45 and produced by special hardening treatment process. It uses the thread (or riveted) fixed to the ground rods, which is conducive to the grounding rod into the hard soil layer, and this protects the ground rod.http://www.chinagroundrod.com"
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Zhejiang Huadian Lightning Protection