... absorbing the harmful substance such as odor, peculiar smell, methanol, bacterial etc. as well as air dust The filter screen adopts ... absorbing the harmful substance such as odor, peculiar smell, methanol, bacterial etc. as well as air dust. Absorption capacity is big ... for the harmful gas such as odor, benzene, xylene, formaldehyde, methanol etc as well as the air dust. With big absorption capacity ...