3C certified power banks are popular. Multiple popular models from various brands are out of stock on the Jingdong platform.

The official flagship store of Beisi on JD.com has various 3C certified fast-charging power bank products currently out of stock. A certain 20,000mAh power bank purchased by a reporter is shown as "purchasing in progress". From ordering to the estimated delivery time, it will take more than a week. The customer service of this store stated: "The warehouse is urgently restocking". On JD.com platform, brands like Green Union and Xiaomi also have some models out of stock. A person close to Beisi mentioned that because non-3C certified products cannot be brought on airplanes recently, it has boosted the sales of mobile power banks, causing some popular products to be temporarily out of stock.