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Sliding Window Upvc Sliding Window Accessory
Sep 26, 2017
The first plastic windows were made of a single adhesive structure, relatively simple, rough, with 1972 years of worldwide energy crisis, the early 70, the energy-saving effect of a good plastic window has been a lot of use, but also to promote the production of profile technology, improve performance, from the original single cavity profile to three cavities, four-cavity profiles, Also led to the development of plastic doors and windows in Europe and Asia.



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