Formaldehyde-free environmentally friendly sound-absorbing air duct is a new type of air duct developed using new technologies and new materials. It does not contain toxic and harmful substances such as formaldehyde and ammonia benzene. The product is made of inorganic glass fiber bonded with acrylic thermosetting resin. It is durable, provides a cleanable fireproof inner surface, and minimizes friction loss.
Widely used in various places.