infiniteloop wroteThank you all
I have found an original asus adapter
Btw I am pretty sure that the 12v 3a adapter was in the box, so they swapped the original one with this cheap Chinese one either at the asus wakil, the shop or at asus Middle East. The box was in blister nylon so most probably swapped at the regional or country wakil
Most if not all electronics nowadays are not carrying factory branding anymore on their adapters due to cost savings.
One of the most popular examples of such things are Acer power adapters for their laptops, you can buy 3 laptops from Acer directly and 3 of them would have different branding on their adapters, even though you can buy 3 other acer laptops and 3 of them would have the Acer branding on the power adapter.
It's just a matter of if they wanted save costs in the branding or not.
You can contact Asus directly for the matter to confirm this.