For quality. The door of our built-in refrigerator and the cover plate are together estimated at about 15 kilos, the two new do not have any problems with it, let's see what it looks like after 2 years.
When installing you have to really be careful, otherwise you get easily bruises: The hinge can fold very strong circumstances ...
Use: When you close the door you should end up firmly press but not the hinge'll work the door (automatically) to.