Factory Direct High Quality average cost of sliding patio door 96x80 inch doors on China WDMAProduct Description 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 100000m2 y, Doorwin can assure you timely