https://www.marketscreener.com/quote/stock/HENGYI-PETROCHEMICAL-CO-L-10284585/news/Hengyi-Petrochemical-Co-Ltd-s-Equity-Buyback-announced-on-October-28-2021-has-expired-with-63-7-42130547/?utm_source=telegram&utm_medium=social&utm_campaign=share