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Anonymous users2024-01-23The lock cylinder and the key are not compatible, if it is a new key to run in for a period of time, the key is old, it is estimated that the lock cylinder can almost be replaced, or try to put some oil on the anti-theft door.
The door is pinned, the tongue of the lock is pinned without pushing the lock, and you can't twist the key.
Longyang anti-theft door is no worse than Panpan door, good quality, but also top ten 1Feiyun (China Famous Trademark, China Famous Brand, Harbin, Top 10 Brands of Security Door, Harbin Feiyun Industrial Co., Ltd.) 2Panpan (China Famous Trademark, Top 10 Brands of Security Door, China Famous Brand, Liaoning Yingkou Panpan Anju Co., Ltd.) 3 >>>More
This is due to the fact that the lock tongue head has a section that causes the door frame to be blocked and cannot be closed, which indicates that the internal weld of the lock tongue or other places is loose, and you can directly find the manufacturer to replace a lock body to solve this problem.
Generally, it depends on the material and surface treatment, which can be up to 50 years. >>>More
The duration of the warranty varies from brand to brand. If you have a property management, you can find a property manager. The general security door is 3 to 5 years old. >>>More