Secretary General of Arab Information and Communication Technology Organization, Mohamed Ben Amor (2nd L, front) visits the China-Arab States BDS/GNSS Center in Tunis, Tunisia, April 11, 2018. The China-Arab States BDS/GNSS Center, the first overseas center for China's indigenous BeiDou Navigation Satellite System (BDS), was officially inaugurated in Tunisia on Tuesday. (Xinhua/Liu Kai)