In addition, when buying aluminum alloy doors and Windows, everyone should pay attention to their performance. 

High quality aluminium door price list need to have good strength, air tightness, water tightness, noise resistance, heat insulation, durability, opening and closing durability.  

The quality of aluminum alloy doors and windows hardware accessories and sealing performance is closely related.  Especially flat window, it depends on the transmission of hardware to undertake sealing, if the quality of transmission is bad, easy air leakage from sash edge.