Equal-pressure and decompression cavity drainage system which is the Euro advanced technical, aluminum can be processed to grainy pattern makes the doors and windows stylish and environmental protect, Multi open method, free folded(single-fan fold, double-fan fold, triple-fan fold,tetrad-fan fold etc.) easy and slight pushing, Euro standard groove design, holding embedded hinge;easy to install

Equipped with double-glazing ensures high-performance of heat insulation, sound insulation, security and safe; Complete functional fittings build up watertight, aitight,sound insulation and energy conservation functions; Equipped with ventilator gives comprehensive vetilation.