1. Amazon conducts a comprehensive assessment of the product's classification, attributes, brand, inventory, logistics, etc. to determine whether the product can be sold on Amazon.

2. Specifically, Amazon will restrict the categories of goods. For example, certain dangerous goods, food, and medicines require special qualifications and licenses to be sold. At the same time, Amazon will also review and approve the goods based on their attributes and brands to ensure that the goods meet consumer needs and safety standards. In addition, Amazon will also evaluate the inventory and logistics of the goods to ensure that they can be delivered to consumers in a timely manner and guarantee the quality of after-sales service.

3. Operational issues are not applicable.