Benefit of magnesium mold  
  1 . Light weight and better strength , So if you use magnesium you can made of more ligth Notebook and other equipment , and with it's better strength , It will have more advandage with plastic part .  
  2. Less heat and strong EMI shield . It will provide better EMI shield and less heat transfer , it Means it is more convenient with product
  3.It can recycling , Due to the enviroment protecting , Magnesium is more suitable for production ,