What should I pay attention to when ordering aluminum joinery?

According to your project, you need to specify the appropriate PVC profile thickness to us. (50mm, 60mm, 70mm….etc)
You need to specify the color of the profile to be used.
You need to specify the color/type of the glass to be used.
You need to send a drawing that specifies the opening shapes and dimensions of the joinery.
If a special hardware use is required, you need to specify.
If your project has a special technical specification, please send it.