This is Cemintel Barestone

Cemintel Barestone panels are prefinished, square edged cladding that provide a natural concrete finish. Consisting primarily of Portland Cement, cellulose fibre, air and water, panels are compressed to produce a dense 9mm panel that offers superior performance in terms of strength and durability.
Barestone panels can be installed on steel or timber stud framing, masonry/concrete, or on timber battens either horizontally or vertically, externally, or internally. External panels are secured with either screws or colour matched rivets when fixing to steel framing, and colour matched screws when fixing to timber framing. For internal applications, Barestone panels are supported by a concealed fixing system.

[@Bronson9822]

My cladding installation was terrible. Nearly every board was scratched and they used the wrong screws. I wish I never chose this product .