Uploaded on 2015-05-15 by DanyChumbes

This building have ![enter image description here][1]curtain walls (double layer insulated glass, with vacuum between them) that retain heat, let in sunlight and allow savings of up to 40% on electricity.![enter image description here][2] [1]: http:// [2]: https://edxuploads.s3.amazonaws.com/14316592916112961.jpg