(1) whether the metal body structure is straight; if the window part, the sealant and other closures are required to be complete.
(2) Whether the metal form is flexible and has no obstacles.
(3) Whether the pipe joints of anti-theft nets, security doors, etc. have been polished, have a stable placement, and have not loosened.
(4) Whether the specifications and wall thickness meet the requirements.
(5) There is no leakage of rain between the window and the window.
(2) Whether the metal form is flexible and has no obstacles.
(3) Whether the pipe joints of anti-theft nets, security doors, etc. have been polished, have a stable placement, and have not loosened.
(4) Whether the specifications and wall thickness meet the requirements.
(5) There is no leakage of rain between the window and the window.
Security doors and windows
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