4 China-hosted nuclear activity monitoring stations certified by CTBTO

Lassina Zerbo (C), executive secretary of the Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO), addresses a joint ceremony for certification in Guangzhou, south China's Guangdong Province, Jan. 30, 2018. Four China-hosted nuclear activity monitoring stations were presented with certificates by CTBTO Tuesday in Guangzhou. (Xinhua/Liang Xu)