The sound barrier is installed, this project is installed on the roof, the noise emitted by the cooling tower and the power supply equipment seriously affects the normal life of the residents. The noise was reduced by more than 10 decibels after installing the sound barrier. Do you have similar noise effects around you?
China's high-speed rail has reached the world's leading technology, and Chinese trains are the fastest and newest. China's high-speed rail has won with its state-of-the-art technology trains, stunning stations and an impressive rail network.
