usa building code custom design Diy commercial aluminium window frames by Doorwin

DOORWIN GROUP is a major Chinese manufacturer, supplying high performance timber windows, alu-clad timber windows and timber doors for large- and small-scale social housing projects in China. These products are highly sought for energy efficiency, longevity and low maintenance.
Our products are manufactured in 3 wholly owned manufacturing plants across China, large state of the art factories, sufficient to supply the largest projects, whilst remaining competitive.