... 100dB or moreAbsorption 12-15dB attenuationThird, the size structure and sizeFor station location, mobile ground, landing solid actingExternal ... , the shield of high quality iron-based materials and profiles, both inside and outside surface of the shielding box electrostatic ... absorber.6, door installation of hydraulic rod, pneumatic and electrical devices7, the configuration locking door, manual or ...