Anti-theft locks should be considered from the following points:
1. The material of the lock body involves a lot of professional knowledge and the technology of various manufacturers. The mainland products are generally iron, steel, stainless steel, and zinc alloy. Due to the limitation of technology and cost, the hardness of the lock rod is not enough, and it is often easy to be forcefully clamped. Hydraulic pliers cut open.
2. Cylinder Most people only look at the shape of a lock when buying a lock. If it is large, it will be better. But no matter which kind of domestic lock you buy, the lock cylinder is generally made of copper. The characteristic of copper is relatively soft. You can easily damage the copper lock cylinder with an electric drill and concentrated acid. There are also differences in the types of lock cylinders. The more commonly used lock cylinders are European-style lock cylinders. In addition, there are American threaded lock cylinders and fire lock cylinders. The latter two are relatively safe. American lock cylinders are used in high-end doors. The lock is of good quality and high security. The fire-resistant lock cylinder is used in fire-resistant door locks, and can withstand a high temperature of 975 degrees for 90 minutes. It is a special door lock cylinder that is enforced by the state.
3. Keys and locks There are many keys, cross, round mouth, crescent, and many kinds of keys. Many of the keys are made of copper or aluminum-iron alloy, which can be easily copied. The better materials are steel and new types. The electronic key has high security.
