How to choose door and window locks for family safety

How to choose door and window locks? Door and window locks are related to the safety of the whole family. What kind of lock is the best? The following points should be paid attention to when choosing locks.

First, we should choose products from companies with high reputation, stable quality and good after-sales service.

Second, first check whether the markings and signs of the purchased product packaging are complete (including the product's implementation standard, grade, manufacturer name, address, and production date) whether the packaging is firm, and whether the contents of the manual match the product, and be careful Exaggerated and inconsistent with the facts.

Third, observe the appearance and quality of the product, including whether the lock head, lock body, lock tongue, handle and cover plate parts and related supporting parts are complete, whether the surface color of the electroplated parts and painted parts is bright, uniform, and whether there is any growth Signs of rust, oxidation and breakage.

Fourth, open repeatedly to see the sensitivity of the lock cylinder spring. Once the key is lost or the door and window locks fail, they will be knocked and twisted, both smashing the locks and destroying the door. Who knows, the door and window locks can be easily removed and replaced with the unlocking piece.