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Anonymous users2024-01-24It's usually turned on with electricity.1! Buy a hole opener. This is the most cost-effective and most used on the market, because it is relatively simple.
We are locks according to their own standards so the keyholes are the same, we made a mold and used an engraving machine to open it, very soon. That is, the investment should be larger.
In the case of old houses, it is generally necessary to groove the wall and replace new pipes and lines.
Of course it needs to be ...
It should be a floating window, that is, the design of the window that pulls out the exterior wall, and the window edge is beautified.
Gypsum board retrograde ceiling (built-in warm pipe light strip).
Security doors are sold by the sleeve. That is, including the door and door frame, which is one, and the ordinary price is between 700-2000 yuan.