Detecting the effectiveness of lightning protection devices (grounding device, equipotential bonding, lightning electromagnetic pulse shielding and soil resistivity)in Beijing Exhibition Centre

Detecting the effectiveness of lightning protection devices (lightning arrester, down conductor, grounding device and surge protective device)in Mong Kok (Beijing) Shopping Plaza

Detecting the effectiveness of lightning protection devices (grounding device, surge protective device, lightning electromagnetic pulse shielding and equipotential bonding)in Ito Yokado