Product Standard ISO9001 Features High UV-resistant,good aging resistant,super solarization resistant,never fade in 50 years,easy installation. Features and Advantage 1.Single or Double Insulated Glass:The profile has designed to fitted the single glass or double insulated glass. Applying a double insulated glass could obtain maximum noise and heat reduction. 2.High Grade Plastic Materials:The profile has been laboratory tested that it doesnt discolour, brittle or become aging even when its exposed to direct sunlight, rainstorm, drying or humidity between-30 to 70. 3. Rubber Strip:High Quality Rubber Sealing Strip provide air tightness therefore it can reduce your Air conditioner cost. 4.Steel Reinforced:The profile has re-inforced 5. Good Water Sealing Property;Aging Resisting;Fire Proof Property:The plastic does not self-ignite, not support combustion, and can self-extinguish;Pressing Resisting