.us:  .us is top-level domain name of official country code for Unite States. Previously, it was introduced for American citizens, companies, organizations and government. Currently, it was treated as only the meaning of “us”, such understanding will make the sense of belonging. In China, there are 33,000 companies invested by Americans and 100,000 Companies cooperated with Americans. As the number is growing sharply, we believe that there are a huge demand for .us in Asia.