Please note that all Bambu Lab 3D printers are tested for print quality before shipping. The nozzles are also tested, and in some cases, filament might be present from this test.
The protective sticker from the heatbed has been eliminated, to make the setup process easier for customers. This information is also present in the following Wiki guide: Unboxing A1 and A1 combo (new packaging) | Bambu Lab Wiki
For any other concerns, please open a ticket with our customer support team and they can provide additional information related to your specific printer, if required.