In certain areas of Beijing, some shared power banks from brands like Xiaodian, Laidian, and Yuekuai are lacking 3C certification marks. When inquired, Laidian's customer service explained that while the products may not bear 3C certification marks, they do possess CQC safety marks, which guarantee safe usage without any hidden risks. Xiaodian's customer service, on the other hand, acknowledged that some products lack 3C certification marks due to variations in design or production batches. However, they assured that these products have indeed passed the required certifications and are planning to update the marks accordingly.