A worker tests just-finished battery packs at a lithium battery factory in Tangshan, north China's Hebei Province, Nov. 29, 2020. Lithium battery production has recently become a leading industrial sector in Lubei District of Tangshan. It is estimated that local manufacturers turn out 780 million yuan (about 118 million U.S. dollars) worth of lithium batteries every year. (Xinhua/Yang Shiyao)
