| Date | Description |
|---|---|
| 2022-06-17 | update robots_txt_status www.knifegatevalve.net: 404 => 200 |
| 2020-06-25 | delete source_ip 220.95.234.198 |
| 2020-06-25 | insert alias KOREA DAYTON VALVE CO., LTD. |
| 2020-06-25 | insert alias Knife Gate Valve |
| 2020-06-25 | insert source_ip 203.245.44.83 |
| 2020-06-25 | update robots_txt_status www.knifegatevalve.net: 200 => 404 |
| 2020-06-25 | update website_status InvalidLanguage => OK |
| 2019-12-26 | update website_status OK => InvalidLanguage |