Composite Material Air Duct:

Polyurethane air duct is a positive pressure ventilation duct made of polyurethane composite materials, mainly used for ventilation at excavation faces in engineering fields such as mines and tunnels. Its core structure typically includes a rigid outer shell, a body composed of polyurethane and multi-layer skeleton materials, and an inner layer of dual-resistance fabric (featuring anti-static and flame-retardant properties).

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