Not really, this is the info from the guys website:
All of our products are made using high quality Rockwool from the Pro Rox RW range this “is a strong but flexible stone wool board”. The materials used to make acoustic panels is extremely important and is crucial to the way the panels integrate and brake up sound.
But why is rockwool a good material to use?
Rockwool is a material which is used to insulate houses, which essentially stops heat from escaping out of the walls. This makes it an excellent material to use when working with sound as an acoustic panel is used to ‘dampen’ sound; to stop it reflecting around the room and causing problems. When the sound waves hits the panel the rockwool helps to break up the sound wave and stop as much of the sound energy from escaping back into the room.
This process “Soaks up the sound energy, turning it into heat, through friction.”