Doorwin Group is a major Chinese professional manufacturer of full line of windows and doors. In the past decades, we have exported hundreds of millions of US dollars windows and doors to North America, Europe, and Australia. Mainly for either a commercial or residential project, including: Luxury House, high-end Mansion, Personal Villa. With factory area of 30,000m2 and production capacity 100,000m2/y, Doorwin can assure you timely delivery and the manufacturing lead time can even be shortened to 18 days. For better serving our VIP client, we have developed various products lines to meet all our clients’ highly customized requirements. Doorwin has been dedicating to the research of energy efficient, eco-friendly and cost-effective products and have made great progress in the heat-insulation, strength, waterproof, sound-insulation, anti-condensation technology. Our product has been evaluated in full compliance with NFRC requirements to the standards.