1. Amazon self-operated is mainly shipped by domestic Amazon warehouses, and after-sales are also completed by domestic Amazon. Customers do not need to pay additional taxes and overseas shipping costs during the shopping process.

2. Overseas purchase self-operated is shipped by overseas warehouses (currently generally Amazon US), and after-sales are determined according to actual conditions. Customers need to cooperate in completing customs clearance procedures during the shopping process and pay taxes and fees in accordance with relevant laws and regulations. In addition, they have to pay additional shipping costs from overseas warehouses to domestic warehouses.

3. Amazon Overseas Purchase implemented by Amazon China is actually just a price reduction promotion strategy. The price is lower than Amazon China but higher than other overseas Amazons, but there are also some products that are not sold in other Chinese malls but sold overseas.

4. Amazon US also supports UnionPay, but I suggest you not to use UnionPay. UnionPay borrows other payment channels overseas, which is very troublesome when refunding. Amazon Overseas Purchase itself is still a special section of Amazon China, so it also supports UnionPay.

5. Some products on Amazon in the United States support global direct mail, so they are all shipped from the United States to any destination in the world. Amazon is the same as JD.com. As long as they are self-operated products, they can be guaranteed to be authentic, but it is difficult to say about third parties. However, the laws in the United States are much more complete than those in China, and even if there are fakes, they are rare.