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"Hardware" means that hardware

Hardware refers to the five metal materials of gold, silver, copper, iron and tin. Hardware is the mother of industry and the basis of national defense. In terms of the nature and use of hardware, it should be divided into architectural hardware, household hardware, steel materials, and non-ferrous metal materials. , mechanical parts, transmission equipment, auxiliary tools, work tools and other eight categories.

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The relationship between hardware performance and door and window performance

The physical performance indicators of doors and windows are: wind pressure resistance, air tightness, water tightness, heat preservation, heat insulation, sound insulation, and compression resistance. The effect of hardware accessories on the first performance of doors and windows against wind pressure determines the success or failure of doors and windows;

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Why do Europeans like to use inward-opening and inward-turning windows

One of the important functions of windows is anti-theft. If the windows are closed for a long time for anti-theft, the indoor air will be stuffy after a long time. The inward-opening inward-turning window can realize the function of anti-theft and ventilation. You can imagine if the thief's hand can go in, but the head and body cannot go in, so that they are stuck outside and cannot move. This is the unique feature of the inward-turning window. place.

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