Chinese vessel collects cobalt samples in the Pacific.

Reuters | 11 November 2018

A Chinese deep-sea exploration vessel has returned to port in Guangdong after collecting samples of so-called cobalt-bearing crusts during a 138-day survey in the west Pacific, China’s official Xinhua news agency reported on Sunday.

Cobalt is used in batteries for electric vehicles, an important industry for China, the world’s largest auto market. Chinese companies are some of the biggest investors in cobalt mining projects in the Democratic Republic of Congo, the world’s biggest producer.

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