Shijiazhuang Xinbiao Doors and Windows Trading Co., Ltd. has done a good job. The soundproof window is a frame window structure made by embedding sound insulation glass into aluminum alloy frame. Usually used in places where quiet environment and noise are needed. Generally, aluminum alloy can be selected. Because the aluminum-plastic co-extruded door and window profiles are also designed with three cavities, even with four or five cavities, the sound insulation performance of plastic doors and windows can reach more than 35dB, and the sound insulation capacity of aluminum-plastic co-extruded door and window profiles can reach more than 40dB, which is far from being comparable to aluminum alloy with single cavity structure.