1. If Amazon in the United States directly mails to mainland China, the shipping fee is $1.99 + $1.99/pound.

2. Attached is the explanation on the official website of Amazon:

3. If you are looking for a forwarding company, there are generally several customs clearance modes for charging. Take flash purchase forwarding as an example:

The first is the US tariff subsidy line, which is charged by the first weight and the additional weight;

The second is the e-commerce express line, which is charged to the nearest 100g;

The third is the express line for travel and mail, which is also charged to the nearest 100g. In addition, forwarding companies generally have many value-added services, such as box division, box consolidation, reinforcement, photography, etc., and some will charge a small fee.