Traditional doors and Windows open means has fallen behind, popular now is this kind of aluminum alloy electric folding window.
The folding window break traditional doors and Windows open means, when the casement open do not take up space, indoor and bottom window sash can hover at any position, electric model can be a key to start the convenient and practical, manual model also can stay in any position as well as efficient insulation can quickly ventilated take a breath, daylighting and ventilated, make indoor air circulation, break through the traditional, open area can reach 100%, You can open the window as wide as it is.
