door lock-which problems should be paid attention to when buy door lock-Cangzhou Jianhua Lock Co., Ltd.

door lock is a very important product, our requirement for it is very high. When we choose and buy locks we must analyze from multiple aspects , only in this way can we buy a good lock.Based on our many years of production experience, we share with you some of the problems we should pay attention to when buying door locks.
When you buy door products, the following should be paid attention to
1, you should choose products with high-profile, stable quality and good after-sales service.
2, check whether the identification of the purchased product packaging, logo is complete (including the implementation of the standard, grade, production enterprise name, address, date of production) whether the packaging is rigid and whether instruction contents matches the products, take precautions against exaggerating facts.
3, check the follows carefully: appearance quality of the door lock, including wether the related accessories such as locks, lock body, lock tongue, hold hands with plate complete parts and so on is complete, chrome, wether colour and lustre is bright, wether the painting on the surface is even and without signs of rust, oxidation and damaged.
4, check whether the product function is reliable, flexible, and should choose two or more products to compare and check.when buying a two-way lock products, in particular, we should check the key with internal and external locks respectively to test the switch.Product insurance institutions should also check every lock three times at least or more.
5, then check the key bit situation, such as five key tooth.Each key should have more than three different key teeth, at the same time the first teeth, the fifth should not choose the deepest key tooth, which is benefit for the insertion of the key and make the key not easily broken.