u/Common_Oil_2375

We recently got this countertop fitted but no idea what the exact material is. Any advice would be appreciated especially when it comes to removing water/heat stains. It is getting patchy very easily (not sure if you can see in the pictures) but it has discolouration all over it and it's only been a few weeks. Also, we've tried cleaning it with normal kitchen sprays and it loses shine straight away.

TLDR: what is this material and how do I take care of it and makenit shiny again?