3C certification, also known as China Compulsory Certification (CCC), is a mandatory product access system designed to uphold consumer safety, national security, and environmental protection standards. Effective June 28, the Civil Aviation Administration of China has banned the carriage of power banks on domestic flights that lack a clear 3C logo, display an ambiguous 3C logo, or have been recalled. This certification is pivotal as it guarantees that products adhere to national standards, enabling them to legally enter the market, be sold, and protect consumer rights.