新华社权威快报丨12月新规，一起来看！

Group 1 - The new regulations for bulk transportation of liquid food aim to enhance food safety and hold chain restaurants accountable for food safety management [1][2] - Starting December 1, the old national standard for electric bicycles will be completely phased out, requiring all electric bicycles sold to comply with the new mandatory national standard GB 17761—2024 [2][3] - The new credit repair management measures will expand the scope of credit restoration for restructured and reconciled enterprises, improving the efficiency and process of credit repair [3] Group 2 - The revised national standard for medical protective masks prohibits the use of breathing valves in disposable medical masks, effective December 1 [3]