Non plasticized PCV-U profiles developed by the company, the structure is novel, scientific and personalized, which reflects the beauty of appearance, but also to ensure the doors and windows of water tightness and air tightness and other internal quality, quick processing, convenient, sound insulation, heat insulation, dust-proof, wear-resistant, anti-pressure, anti-aging and other physical properties, while the company has increased the capital investment in technology, the use of international advanced green rare earth stabilizer, Ciba UV light conversion agent ,the production of high-grade, high-quality raw materials for the United States Du Bangtai White ,the quality has been further improved. The technology has reached or higher than the national standard.