FIGURE 1.
Basic information of all tested enterprises. Note: (A) is the scale of the enterprise; (B) is the industry to which the enterprise belongs; (C) is the number of employees; and (D) is the establishment time of the enterprise.
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.