1. Acoustic insulated duct made of aluminum foil + pet + helix steel wire+ glass wool
2. Apply for low/medium/ high pressure central for HVAC system, use for air ventilation in each environment.
3. Round style, and easy to install oval or round connection.
4. Fireproofing, at high temperatures or in case of fire, no toxic gas emitted.
5. Easy to delivery.
6. Good insulated---heat insulated
7. Absorb noise---can absorb the noise from the shaking when ventilated
8. No corrosive---not corrosive the aluminum pipe and metal parts
9. Durability---not decay, mildew
11. Practicality: suitable for the densely-populated area(such as school, supermarket, office, stadium, theater, factory.),high requirement of the environment area, such as hospital, laboratory, howff, bus, train, broadcasting studio.