Square Extrusion Series Square extrusion Series has very trim and tidy style. It could be fixed as high as a building with several floors. Because of its capacity of constructing large creatures, square extrusion fits deadly to express majesty and sublimity. Due to the square basic structure, extrusion of this series is pretty easy to install, however, with the help of different shaped components, the impression it gives out never could become monotone. The multi-optional color diversions also make exhibiting room more charming and attractive. Surely it would be able to meet the satisfactory of most picky person.