Introduction: used in the electronic series mainly memory alloy headset bracket, memory alloy headphone cable, which has the following advantages: 1), super elastic, elastic wear is 8 times of stainless steel; 2), temperature memory, memory Alloy headphone cable is very soft when the temperature below 5 degrees , and it can be free deformation; and the temperature rose to the body's temperature, the material will automatically restore the original shape, and has a strong stretch; 3), the material through SGS standard test, the test results in line with the EU RoHS directive, does not contain cadmium, mercury, hexavalent chromium element, this material can be used in medicine, such as heart stent, and has a good compatibility with body; 4), the Material is very light, the density is only 6.54g / cubic centimeter; 5), the material has longer service life.