yes a pressed oil would be different from an essential oil produced by distillation but i don't know if pressing would work with peganum harmala seeds like it would with sesame seeds, harmalas seem too dry (which is probably why they added the sesame). In any case, i found their
website and they list harmala oil in the category of essential oils. To be honest, as an arab, I would not take information of this kind written in arabic as reliable information, so it could be a pressed oil nonetheless. As an example, you can see on the information paper they list the ingredients in french but they don't do it in arabic, because generally arabic people are less fussy and do not look at the ingredients list.
I don't think they have a special way of processing the harmalas different than the way they process their other oils, which is the most common and traditional way of distillation.