... , anticorrosion, sound-proof, heat insulation, fine appearance, fashionable styles, non-aging, non-fading. pvc extrusion profile,building plastic profile , ... used for construction, vinyl drywall accessories, trims, foam PVC shutter parts, doorplates, door frames and vinyl sliding ... , environment friendly. 6. No distortion, good insulation, anti-iaging, anti-dust etc. PVC U-type extrusion profile