‍‍Environmental waterproof acoustical membrane panel is a kind of new environmental friendly and energy conservative acoustical material mounted between the layers created by the roof and perforated metal board or cement fiber board.It changes the traditional method of non full enclosure of the perimeter of the acoustical fiberglass felt. The black felt behind the perforated metal board and perforated cement fiber board can be ignored when installing.The installation is easy and quick. It is the professional acoustical membrane panel used in natatorium and other places where there is of high moisture density.‍‍