Specification :

Patent Fuctions :
1. Push - Relase design on ball bearing
slide provides easily removable for replacement.
Thus all drawers can be replaced when necessary.

2.Automatically - Locked - again system
This is to help that when user locks the trolley but sometime one or more two drawers may not totally closed.
At this time, no need to take out the key and open the trolley, close again then lock again.
User just push those unlocked drawers further to be totally closed position and then drawers will locked automatically.
This is to save time.