China has succeeded in reducing Singapore bunker sales.

https://www.channelnewsasia.com/news/business/china-s-zhoushan-to-go-after-singapore-marine-hub-s-top-billing-11026980

https://www.spglobal.com/platts/en/market-insights/latest-news/shipping/121318-singapores-nov-bunker-fuel-sales-fall-9-on-year-to-391-mil-mt

China has been trying hard to reduce Singapore bunker sales and it has finally succeeded.

Singapore November bunker sales dropped 9% year on year.