Curtain walls are mainly used in high-rise buildings, which can play the role of heat insulation, sound insulation and decoration. Refers to a structural form of the exterior wall of a building, usually composed of aluminum alloy, glass, stone and other materials. The design and construction of the curtain wall need to consider the structure of the building, climate conditions, environmental requirements and other factors, so as to ensure safety, beauty and practicality. Curtain walls are precast at a factory and assembled before they are brought to the site. Basically, there are types of curtain wall systems depending on the method by which the comonenets are assembled. Q,What's your price? A,The price is based on buyer's specific requirements. Q,What is the standard size of your windows and doors? A,Our windows and doors are customized. We always manufacture as per your dimension. Q: Why Choose Meidoor ? A: 1). Over 17 years aluminum industrial experience and strong team; 2). 30 million RMB registered capital, 2 factories and 1000 employees; 3). Complete production processing line, from melting, extrusion, powder coating, anodizing and wood grain, also with deep processing capacity. 4). ISO9001: 2008, ISO14001: 2004, ISO10012, AA grade standardize corporate; 5). Multi business scope, various types of products, ensures market shares Q: How long is your delivery time? A: Generally it is 25-30days. Q: Do you provide samples ? is it free or extra ? A: Yes, we could offer the sample for free charge but do not pay the cost of freight.