One、Are anti-theft windows considered illegal construction?
Installing anti-theft windows in a legitimate building does not constitute an illegal construction.
Illegally constructed buildings: In a strict sense, this refers to buildings and facilities that are constructed in violation of the provisions of relevant laws and regulations, such as the Land Management Law, the Urban Planning Law, and the Regulations for the Management of Village and Township Planning and Construction. Illegally constructed buildings primarily include:

⑴ Buildings constructed without obtaining the construction land planning permit and construction project planning permit, or without obtaining approval for applications.
⑵ Unauthorized modification of the provisions in the construction project planning license for buildings;
⑶ Altered the intended use of buildings constructed according to specified standards.
(⑷ Buildings that have been used for temporary construction but have not been removed after the expiration of their validity period and have become permanent structures; (⑷ Buildings constructed by fraudulently obtaining permits through the falsification of relevant materials.
Two. When installing anti-theft windows, what should be paid attention to?
1. Before installing anti-theft windows, it is necessary to find a reputable and established company to ensure better protection and support. Furthermore, any issues that may arise after installation can be addressed by contacting the vendor for repairs. Large companies prioritize their reputation and will promptly resolve any problems, while smaller companies may take several days to respond, which can disrupt normal living.
2. For anti-theft window materials, special attention should also be paid to the material selection. It is best to choose stainless steel, and the internal composition should contain a certain amount of nickel and chromium to ensure that the anti-theft window is less prone to rust. Furthermore, the thicker the pipes used, the stronger the structure will be. Generally, a difference of 0.1mm in thickness can increase the load-bearing capacity by hundreds of pounds.
3. When installing anti-theft windows, it is necessary to communicate with the construction personnel. A small door needs to be installed on the anti-theft window in the location where the air conditioning unit will be installed, to facilitate future maintenance. However, avoid creating too many small doors, as this can compromise the structural integrity of the anti-theft window. Additionally, the anti-theft window should not be too large, and all screws must be securely fastened.