After determining which type of lock cylinder to choose, the next step is to determine the quality of the lock cylinder. The quality of the lock cylinder is easy to judge. From the surface workmanship of the lock cylinder, we can see that if the surface looks rough, the quality of the lock cylinder must be poor. The safety of the lock cylinder can be judged from the shape of the key. The safety performance of the common shape key cylinder is relatively poor, so the selection should be careful. The lock cylinder of a more complex key, such as a snake shaped anti pulling rib, is very safe. We have to go out to work every day and repeat the action of opening and closing the door every day. Although the door can't be broken, there will be problems after the lock cylinder is used for a period of time. Although the problematic lock cylinder can continue to lock and unlock the door, the safety is greatly lost. For the sake of our property safety, Hainan master Huang company reminds you to immediately when you find any problems with the lock cylinder The replacement of lock cylinder can not be delayed for a moment. Before the replacement of lock cylinder, the selection of lock cylinder is very important. If the selection of lock cylinder is improper, not only installation problems will occur, but also future safety will be guaranteed. Hainan master Huang suggests that when choosing the lock cylinder, you should pay attention to the length of the lock cylinder. If the length of the lock cylinder is not suitable, it will not be installed. Generally, the length of the lock cylinder is selected according to the thickness of the door. Now there are two kinds of thickness of the door in the market, one is 50mm and the other is 70mm. When choosing the lock cylinder, you should measure the thickness of your own door in advance In case of the former, the lock cylinder with a length of 75mm shall be generally selected; in case of the latter, the lock cylinder with a length of 90mm shall be selected. In fact, when choosing the lock cylinder, the price is the best way to judge the quality and safety of the lock cylinder. If you want to buy a good lock cylinder, don't be greedy for cheap.