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Regular lock picking companies and hardware lock shops, such as (Li Wen lock city, actually home) and so on.
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Where can I buy it in Baodi District, Koudong?
Most of the places where security doors are sold have lock cylinders, and of course, there are also places to repair locks.
It is recommended that you buy it on Taobao, which is much cheaper than in a physical store. Just pay attention to the specifications of your existing lock when buying, otherwise you can't use it. I've bought good ones online.
1. Shops that sell security doors.
2. Online purchase. >>>More
You can buy it online! The key is to buy a lock cylinder with good anti-theft, it is recommended that you take a look at the lock of Modila and the colorful lock cylinder of CEI, these two brands of locks are super B-level, anti-technical opening for more than 270 minutes, and the anti-theft is very good. Look it up on the Internet and you'll find out!
It's advertising again, don't go, it's all liars.