Aluminum windows are more and more popular in today’s world. If I want to start the business of it, what should I do? First, we need to confirm what kind of windows to make, sliding windows, casement windows or swing windows? Then to find the aluminum profile supplier. Second, find the right window machines which suitable for the profiles. As there’s no universal machines can make all kinds of windows, we have to make sure the machines are available for the profiles, that’s why we need to c......