Unitized curtain wall. Structure:composed by the unitized panel. The beam and column is composed by unitized panel edge beam and edge column. That is unitized curtain wall beam is composed by 2 nos. Aluminum extrusion. It adopts sealant on the connections, without gluing.Product features:1、Limited time for the project, fast to install, easy to protect the finished products, it can construct with the main structure at the same time. It is good for shorten the whole construction period....