I know by looking at ours it isn't corian which I don't like anyway, granite is lighter and more durable! for homes of course.
Hanex is more flexible and less porous but it can get surface scratched if you aren't careful, using small felt sticky rounds on the bottom of abrasive items will prevent that which I also use on the dining table. My first 'go to' was using marine cleaner & wax as soon as I got BC from factory residue, now it shines without being sticky or too slick. Not sure if it will make any difference in the long run but its worth a shot.