Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Numbers in the figure corresponds to the following sample localities: 1, Nanjing; 2, Wuxi; 3, Weishan; 4, Huaibei; 5, Qingdao; and 6, Tangkou.
