Zhangmenren Building Materials was established in 2015 and is located in Building 6, Yiqiying Industrial Park, Nanhai, Foshan, Guangdong, China. covering an area of 10,000 square meters. It has been specialized in the export industry of European and American doors and windows for 10 years, mainly exporting to the United States, Europe, Canada, Australia, New Zealand and other countries. The company has a complete door and window certification system. Including NFRC certification, CE certification, AS2047 certification, etc. Casement windows, sliding doors, swing doors and folding doors have American standard watertightness of 720Pa, European standard CE watertightness of 1050Pa, Australian standard AS2047 watertightness of 600Pa, wind pressure resistance of 5040Pa, and air leakage rate ≤0.01. The sound insulation performance Rw can reach 37dB, the thermal insulation performance is ≤0.27, SHGC≤0.17, and the product meets the highest inspection standards of export countries! Industry technology leading brand.