Main content


This site is committed to suring that its site is accessible to all users. The accesskeys used by this site are designated as an alternative for people with disabilities.

The Accesskeys used by this site are designated as follows:

Note: IE Accesskey is used with Alt; Firefox Accesskey is used with Shift+Alt

  • Alt+U: Use the quick key alt+u, and then use the tab key to find the “Site Guide” and related links above, main menu, and total station search.
  • Alt+C: The main content area in the middle of the webpage. This section presents the webpage content of each unit webpage.
  • Alt+Z: The information section at the end of the page, with the organization's contact information, stamps, announcement information and the main link items of this website.