与闷骚mm的性经历小说_性欧美欧美_天天躁夜夜躁狠狠躁2024_国产真实伦对白视频全集

Broken bridge aluminum alloy window is an improved type based on old aluminum alloy window in order to improve the thermal insulation performance.The principle of broken bridge aluminium alloy window uses PA66 nylon to be separated and closely connected into a whole with inside and outside two layers of aluminum alloy,which constitutes a kind of new type thermal insulation aluminium profile, according to its different connection mode,that can be divided into strips type and injecting type,which use this profile for doors and windows,its insulating property is superior,which completely solves the problem that aluminum alloy conducts heat faster and the fatal problem that does not meet the requirements of energy saving,at the same time to take some new form of structure match, which can completely solve the untight seal trouble of "aluminum alloy sliding window".The product is made of aluminum profile on both sides and PA66 nylon in the middle as heat insulation broken bridge material.This innovative structure design takes into account the advantages of nylon and aluminum alloy, and at the same time meets the diverse requirements of decorative effect, door and window strength and anti-aging performance.Super broken bridge aluminum profile can realize the three-channels sealing structure of doors and windows, and reasonably separates the water vapor cavity, and successfully achieves the balance of isobaric air and water and significantly improves the water tightness and air tightness of doors and windows.The air tightness of this kind of window is better than any aluminium,and PVC window,which can assure there are without dust in the big areas of wind and sand of the indoor windowsill and floor; and the residents within 50 meters on both sides of the expressway are not disturbed by noise, and its performance is close to casement windows.