Each kind of door on the building has its own identification method, which allows consumers to rest assured that the purchase, ease of use, improve the credibility of the value of the brand.Aluminum alloy anti-theft door Is no exception, according to the specific "inspection certificate" rules

First, ask the seller to produce the relevant departments of the "test certificate" to check whether the national mandatory standards GB17565 - 1998 technical requirements.

Second, remove the cat's eye, the doorbell box or the lock handle, check the internal structure of the door body. The door should have several reinforcing steel bars, so that the front and rear panels are organically connected together. The door has the best asbestos and other fire, thermal insulation, sound insulation function of the material as a filler.

Third, check whether the lock is used by the public security department inspection of qualified special anti-theft lock, the lock is installed in a reinforcing steel plate protection.

Fourth, the product quality inspection process, whether there are welding defects，The doorAnd the door frame with the dense, etc..

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