1 Indoor and outdoor aluminum profiles are extruded respectively. They are treated at the surface and colored separately according to the different needs. 2 The equipment combines the two kinds of aluminum profiles which have finished the 1st step to make them one. 3 Pour glue with method we do at single color aluminum profiles. 4 Place and cure. 5 Do the bridge cut-off step, and get product. http://www.hgcx.cn/en