Refers to most of the world, aluminum alloy, copper and iron in protecting skin damage are many need to loosen the screw to replace the protection of the skin and in order to beautiful, plus protection refers to the backplane is generally thin, so most of the screw is small, in the process of use protective refers to loosen screw down the screws, especially aluminum extremely easy to damage.DECUT protect refers to the new structure, replacing protect leather, just use two big screw can quickly change refers to the skin.Particularly strong, durable, service life than its type refers to the skin for several times.The two protection refers to the difference is that different process and material.PROMIX for zinc alloy composite materials.Protection of refers to the quality than other means a slightly heavier.APRO protection means for aluminium.Di cool, innovative design sharply reduce refers to the waste of skin, make the precious horse skin become everyone with affordable products.