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Find the manufacturer, if you ignore it, complain to the Consumer Association, and the Consumer Association will come forward to deal with it.
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What brand of security door are you?
If there is a key-free one, then you can only change the lock cylinder. The most professional and effective is the lock picking company, and they have more lock cylinder specifications. You can call 114 to find out. >>>More
Personally, I think that the anti-theft effect of the Panrong Wolverine tooth lock cylinder is very good, it is very cost-effective to buy one, and the price is not expensive, and it is similar to the locksmith to change hundreds of lock cylinders.
First of all, it depends on what material your security door is, if it is stainless steel >>>More
Under normal circumstances, the anti-theft door can be reversed, if your anti-theft door is not able to be locked, then the first thing to see is whether the lock cylinder inside is stuck, it is generally recommended that you can directly find a professional locksmith to come and have a look. >>>More
Dip chopsticks in some peanut oil and drizzle. It's just peanut oil for stir-frying.