How to choose good door and window locks?

When selecting door and window locks, first check whether the use function of the product is reliable and flexible. More than two products should be selected for comparison inspection. Especially when purchasing two-way lock products, all keys must be used to test open and close the inner and outer lock heads respectively. The insurance organization of the product should also be checked. It is recommended to try each lock at least three times.


1. Products of enterprises with high popularity, stable quality and good after-sales service shall be selected.


2. First check whether the marks and marks of the purchased products are complete (including the executive standard, grade, manufacturer's name, address and production date of the products), whether the packages are firm, whether the contents of the instructions are consistent with the products, and be careful not to exaggerate and inconsistent with the facts.


3. Observe the appearance quality of the product, including whether the lock head, lock body, lock tongue, handle and cladding parts and relevant supporting parts are complete, whether the surface color of electroplated parts and painted parts is bright and uniform, and whether there are signs of rust, oxidation and damage.


4. Check whether the use function of the product is reliable and flexible. More than two products should be selected for comparison inspection. Especially when purchasing two-way lock head products, all keys must be used to test open and close the inner and outer lock heads respectively. The insurance organization of the product should also be checked. It is recommended to try each lock at least three times.


5. Then check the tooth pattern of the key. If there are five key teeth, each key should have no less than three different key teeth. At the same time, the deepest key teeth should not be selected for the first tooth and the fifth tooth as far as possible, which is conducive to the insertion and removal of the key and is not easy to break.