1, light weight, high hardness. Completely closed-cell foam structure formed of light and uniform honeycombs, formed with high hardness, lighter than air duct.
2, aging resistance, chemical stability. Long life, 20-30, does not absorb water and excellent resistance to corrosion.
3, high quality and environmental protection. Plastic extrusion Panel not decomposed and mildew, no volatilization of hazardous substances, does not produce harmful gases.
4, production and installation of lightweight, lower cost and more. Some flanges and other supporting material may be saved.
