We supply "JHL" band acoustic door which can carried out in great care, the sound transmission clas (STC) can be up to STC57, hardwood or steel material are availables
We supply "JHL" band acoustic door which can carried out in great care, the sound transmission clas (STC) can be up to STC57, hardwood or steel material are availables
We supply "JHL" band acoustic door which can carried out in great care, the sound transmission clas (STC) can be up to STC57, hardwood or steel material are availables