Now, it's mostly floor-level factories. The machinery and equipment of the tenants on the upper floors aren't too noisy on their level, but the vibrations transmit to the lower floor and sound like the low-frequency hum of airplanes. Despite the fact that the machinery on the upper floor has been padded with many thick rubber pads, it seems to have little effect. Do you have any good shock absorbers now? - Yes, that's by purchasing the Jindelai Air Spring Vibration Absorbers from Dongyongyuan! The shock absorption can reach over 90%.