| A Monitoring System for Supermarket Based on Trajectory of Palm Recent countries visiting this post |  |
 | 1 | Sweden |
 | 1 | Japan |
 | 1 | Russian Federation |
| A Monitoring System for Supermarket Based on Trajectory of Palm Recent countries visiting this post | |
| 1 | Sweden |
| 1 | Japan |
| 1 | Russian Federation |