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Anonymous users2024-01-24All security doors are rated on the middle door frame below the first hinge from the top number, and the stamp must be clear and clear.
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Anonymous users2024-01-23The grade of the spring security door is stamped on the edge of the door frame.
Want. The anti-theft security door is produced according to national standards and has anti-theft performance. Steel doorsMetal doors are produced according to enterprise standards and do not have anti-theft performance. >>>More
The national standard of the anti-theft door is A, B, C, D, the most basic, the back of the panel steel plate, the door frame is clearly marked, and the door in the door is indeed as he said. Just like some brands of steel and wooden doors are stamped, in fact, the same as plates.
The burglar security level marker is permanently fixed to the upper corner of the inner hinge at a height of 1600mm and 100mm above the ground. >>>More
It's best to buy a grade A without a level, you can also prevent gentlemen and villains. >>>More
Spring A380, ultra-thick door leaf centimeter, double lock body structure, filler rock wool, Grade A anti-theft door, a cost-effective door.