Insulation: low thermal conductivity, good insulation effect, especially for some of the cold northern regions installation; Noise: its structural design of precision, tight joints play a very good sound insulation. Tightness: All are equipped with multi-channel gap at the seal, airtight high energy savings. Watertight: design a comprehensive, with anti-rain, rain can be completely isolated from the outside, the structure of the drainage and water tightness is quite high. Fire resistance: Profiles is a metal material, do not burn with fire resistance. Security: the feature fine decorative hardware and advanced lock, with good into effect. Impact: External aluminum alloy, that impact is stronger than steel doors and windows profiles. Maintenance-free: composite profiles are less vulnerable to acid corrosion, do not fade, almost do not need maintenance. When there is oil, you can scrub with water plus detergent will clean as new after washing. Design and good effect: the scientific design, reasonable energy-saving materials, so get praise and recognition authorities for construction luster! The company established a sound quality management system, through the ISO9001-2008 quality management system certification, ISO14001-2004 environmental management system certification, has won the "National Inspection-free Product", "China Famous Brand", "Shandong Famous Brand", "Shandong famous trademark "honorary title. Our products smooth surface, uniform color and delicate, hardness, thickness of the oxide film, the thickness of the composite membrane electrophoresis, powder coating all reached the national standard, the national, provincial and municipal quality and technical supervision departments sampling, its chemical composition, mechanical properties and Other indicators meet or exceed national standards. Alcoa has been broken insulation http://www.zgpal.com hundred abide by the "quality, professionalism, enthusiasm and credibility," the operating principle, and always adhere to the "quality, efficiency, service, innovation" for the purpose of research and development of products structure, process innovation, in line with efforts to develop a green, energy-saving, environmentally friendly products, and continuously improve customer satisfaction. Aluminum hundred sincere return your choice.