The price of 70 broken bridges is relatively low, and the price excluding installation is about 380-600 yuan. It is common for translation to be cheaper than flat ones. The weight of the profile is inferior in terms of sound insulation and air permeability. The 70 broken bridge aluminum flat opening of Weichang made by my family is 650 square meters, and a window is 580, there are 380 sets of hardware inside, which are for reference only. The price gap of each supplier in each region is very large. I think 70 is really cost-effective. This price is OK. Weichang aluminum has good quality, high output rate, good service, trustworthy! There are four series in Weichang broken bridge aluminum doors and windows, which are 78.80.88.90 respectively. The price of ordinary thickness is about 350 yuan. If the thickness is more than 1.2mm, the price will be about 430 yuan. Broken Bridge aluminum doors and windows, using heat insulation broken bridge aluminum profile and hollow glass, with energy saving, sound insulation, noise protection, dustproof, waterproof and other functions. The Broken Bridge aluminum doors and windows K value of heat-conduction coefficient is below 3W/㎡ · K, which is half less than the heat loss of common doors and windows, and reduces the heating cost by about 30%. The sound insulation capacity is more than 29 decibels, and the water tightness and air tightness are good, they all meet the national A1 window standards.
