Detecting the effectiveness of lightning protection devices (lightning arrester, grounding device, surge protective device and soil resistivity)in Capital Airports Holding Company
Detecting the effectiveness of lightning protection devices (lightning arrester, down conductor, grounding device and surge protective device)in Shenhua Group
Detecting the effectiveness of lightning protection devices (grounding device, surge protective device, equipotential bonding and soil resistivity)in PetroChina Research and Transformation Base