1, judged according to the locks lock body material: this involves a lot of expertise and technologies of various manufacturers, Mainland for iron, steel, stainless steel, zinc alloy, due to technology, cost constraints, locking lever hard enough, it's easy to be cut by cutters, hydraulic clamp.
2, according to the lock cylinder to judge: most people buy lock shape, think very well. If we pay attention, no matter where you buy a home-made locks, lock cylinder is usually copper, copper features soft, with electric drills, thick stream acid, you can easily damage the copper cylinder. More widespread use of lock cores for European cylinder, in addition to this, there is American thread lock cylinders, fire-resistant lock cylinder, which security is relatively high.
3, locks and keys for judgment: lock keys a lot, cross, circle, Crescent, diverse bunch of many key materials for copper or aluminum alloy, it is easy to be copied, at present good material steel, also has a new type of electronic keys, high security.
4, according to the filling and plate thickness to judge: you can install security doors look, cat's eye plucked out of the door and you will see what is inside, if the cat is already well, but is turned down, can be seen in the lock time. Consumers use their hands to knock knock on doors, sound firm, illustrate plate thickness and filling. If it sounds "poop", it shows the plate thickness is not enough.
5, locking points are just a cover: the lock is an important element of security doors, many sells security doors, when to sell, said their burglar-proof door locks, it's just a cover to attract customers. Real good lock is not locked, the more the better, and 4 locking points lock with 10, 20 points there is no essential difference. Regardless of the number of locking points, centers on the lock cylinder, as long as the lock is broken, and no amount of lock is of no use.
6, production and sales licences: consumers can check relevant certificates, in addition to the production license, a manufacturer should also have appropriate technical inspection certificate. Fire inspection reports, seals test report so that you can have a general understanding of technical performance of the product.
In short, through several aspects, I believe you will be able to pick up one for yourself at home using the anti-theft lock, lock purchase skills a lot, if you put your mind to learn and understand, believe buy lock product no longer is a tough job! With advances in technology, today's GPS trackers used by the owner's favorite, GPS car trackers, the electric car GPS Locator, motorcycle GPS tracker appeared, for lock market is a very big challenge.