Founder's restrained modeling bid farewell to the old-fashioned window machine, which is bloated and heavy, and the fine punching panel is exquisite and durable. The metal round control bar is visually displayed, and its function is clear at a glance. Side gradient halo knob, operation with ritual feeling; Multi-color texture body is optional, neat lines are easily integrated into all kinds of American home windowsills, installation is simple and not abrupt, and the color value is a corner of soft clothes.