... GB/T8814-2004 4.Dood service Extruded plastic profile in American style ADVANTAGES: 1. Special ingredient with environmental protection function, ... , such as sound insulation, heat preservation, anti-aging, good sealing.5. Heat preservation, energy saving,it can help ... of your air conditioner6. Corrosion preventive, its widely used in costal and moist areas.7. Anti-weatherability, acid alkaline, ...