> I'm really struggling to think of a material that is "fairly exclusive" to Apple.
Elithrar's reply hit the nail on the head, but in some cases they do use some fairly exotic materials. For instance, the bead-blasted high-tensile stainless steel antenna array (iPhone 4 & 4s) and artificial sapphire crystal lens coating on the latest iPhone. Both required new manufacturing processes and a considerable amount of hardware to work at scale.
Elithrar's reply hit the nail on the head, but in some cases they do use some fairly exotic materials. For instance, the bead-blasted high-tensile stainless steel antenna array (iPhone 4 & 4s) and artificial sapphire crystal lens coating on the latest iPhone. Both required new manufacturing processes and a considerable amount of hardware to work at scale.