12月1日后，这些电动车禁售！

Group 1 - The core viewpoint of the articles is the implementation of new mandatory standards for electric bicycles in China, which will affect production and sales starting December 1, 2025 [1][2]. - The National Certification and Accreditation Administration has announced that all existing CCC certification certificates based on old standards will be revoked by December 1, 2025 [1]. - The new national standard GB 17761—2024, effective from September 1, 2025, includes upgraded safety requirements such as fire resistance, total plastic mass, maximum vehicle weight, Beidou positioning, and pedal assist devices [2]. Group 2 - Consumers are advised to look for the CCC certification mark and product quality certificates when purchasing electric bicycles [3]. - To verify the authenticity of the product quality certificate and the validity of the CCC certification, consumers can scan the QR code on the product quality certificate or visit the national certification and accreditation information public service platform [3].