Core Viewpoint - The article highlights the issue of second-hand power banks being sold on platforms without proper certification, raising concerns about safety and legality [1] Group 1: Market Activity - Numerous sellers are found on second-hand platforms offering large quantities of second-hand power banks, some explicitly stating that these power banks lack 3C certification [1] - The sellers claim that these power banks are sourced from airports, with some being lost items from travelers [1] Group 2: Target Demographics - The primary customer base for these power banks is identified as students, particularly with the upcoming school season [1]

Core Viewpoint - The new regulations by the Civil Aviation Administration of China prohibit passengers from carrying non-compliant power banks on domestic flights, leading to a surge in the sale of second-hand power banks marketed as "airport confiscated" on online platforms [1][2] Group 1: Regulatory Changes - As of June 28, 2023, travelers are banned from bringing power banks without a 3C certification, unclear 3C markings, or recalled models on domestic flights [1] - Major airports in cities like Beijing, Shanghai, and Guangzhou have implemented services for temporarily storing or shipping power banks [1] Group 2: Market Response - Following the new regulations, some online shops began selling second-hand power banks at around 20 yuan each, claiming they were "airport confiscated" [2] - These second-hand power banks are sold without guarantees of passing airport security, brand authenticity, or usage history [2] Group 3: Legal Implications - Starting August 1, 2024, the sale of non-3C certified power banks will be prohibited, with penalties ranging from 50,000 to 200,000 yuan for unauthorized sales [2] - Consumers are advised against purchasing non-certified power banks due to safety concerns and potential legal issues [2]