As the sound damping feature, our keyboard doesn’t need this feature, keyboard with this feature is very thick, our keyboard is ultra-thin, there is not enough space inside to have the cavity sound, so our keyboard does not need shock absorption to offset the cavity sound, conventional keyboard in the market, it has a thick cavity, so it will have empty cavity sound. You need shock absorption to absorb the cavity sound. Our keyboards are all made of metal, which is hard enough. This effectively reduces noise and cavity sounds.The more rigid the plate the greater the effect.