Model steel profile is to point to PVC profiles. Sound insulation sex good, good air-tightness, ageing resistance, anti-corrosion, watertightness, impact resistance, fire resistance, insulation resistance. Window of model steel door namely appearance for engineering plastics polyvinyl chloride (PVC) steel lining to increase the strength of the doors and Windows. In forming before need to join titanium pigment, uv absorber, processing modifier, impact modifier, internal and external lubricant and packing. With aluminum alloy doors and Windows of the beautiful appearance, and has the strength of the window.
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