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Anonymous users2024-01-24Whether the anti-theft door is soundproofed has a lot to do with the filling, at present, most of the honeycomb paper sound insulation effect is the worst, followed by rock wool, polyurethane foam is the best, and the sealing strip of the anti-theft door is also related. It is advisable to replace a soundproof door filled with polyurethane.
If you don't want to see it, make the wall a background wall with a lot of stripes, and make the door part of the wall, and the edge is just on the stripe, so that the door is hidden.
Your situation may be the reason for the lock cylinder, you are not oiled! If it is oiled and needs to be cleaned, if it is not necessary to remove it for lubrication, your key is not a flat one.
Absolutely, just go to the place where you bought it.
Generally, it is the property to repair, including contacting the manufacturer for after-sales and so on.
Foam is added, cut after drying, and the outside is covered with sealant.