Detecting the effectiveness of lightning protection devices (down conductor, grounding device, surge protective device and soil resistivity)in Lottery Management Center of General Administration of Sport of China

Detecting the effectiveness of lightning protection devices (lightning arrester, grounding device, equipotential bonding and lightning electromagnetic pulse shielding)in China Mobile Communications Corporation

Detecting the effectiveness of lightning protection devices (grounding device, equipotential bonding, soil resistivity and lightning electromagnetic pulse shielding)in CEICIoud Data Storage Technology (Beijing) Co., Ltd.