The article has a link in it to: https://www.sciencedirect.com/topics/engineering/flow-battery https://www.sciencedirect.com/topics/engineering/flow-batter...

The article has a link in it to: https://www.sciencedirect.com/topics/engineering/flow-battery https://www.sciencedirect.com/topics/engineering/flow-batter... If you scroll down there's a table 32.7 about Projects in China. A number of which, according to that table, are completed.