On December 28, 2023, the Chinese Ministry of Public Safety (MPS), Ministry of Commerce (MOFCOM), National Health Commission (NHC), Ministry of Emergency Management (MEM), General Administration of Customs of China (GACC), and National Medical Products Administration (NMPA) jointly released an announcement, aiming to optimize control measures for the import, export, operation, and use of certain products containing gamma-butyrolactone (GBL; CAS No. 96-48-0).