オーストラリア公共放送 ABC News
https://www.abc.net.au/news/2021-12-15/adblue-local-producer-secure-urea-diesel-crisis/100699832
>Australian AdBlue manufacturer charters planes ready to fly in emergency urea as diesel additive crisis continues
> "In the case of China, we understand that they closed some of the coal-fired power stations to clean up the air for the Winter Olympics. So they've switched to gas-fired power, which takes the urea plants offline, and China's a big producer."
日本語ソース
https://www.excite.co.jp/news/article/Recordchina_886654/
> 中国の「尿素」輸出減で豪州もピンチ、日本などと交渉も
