The composite index for coastal bulk freight edged down 1.6 percent week on week to 1,055.6, the SSE said.

China Taiyuan coal transaction price index stood at 125.03 points Monday, up 0.94 percent week on week.

Released by the Qinhuangdao Ocean Shipping Coal Trading Market Co. Ltd. every Wednesday.

The company reported post-tax profit of 2.3 trillion VND in Q1, up 27 percent against last year.

China's coal output up 1.3 pct in Jan.-April.

China's coal industry reports steady growth in 2019.

The 5G network in Yangquan's subsidiary, Xinyuan, is the country's first commercial 5G service under a coal mine shaft. It is built in partnership with China Mobile and Huawei.

China Taiyuan coal transaction price index stood at 124.93 points Monday, down 0.4 percent week on week.