According to data, as of the end of 2018, China's elderly population aged 60 and above was about 249 million, accounting for 17.9% of the total population, and the total number of elderly people will ···

Internet of Things security control system as the Internet of Things era hardware and software, operating systems, communication protocols, cloud platforms, the advantages of the integration of all as···

With the continuous popularization of smart locks, we are beginning to understand more and more about smart locks, but, because of the knowledge of smart locks is still relatively vague, so there are ···

Fire lock classification: 1, fire locks: general class A fire door are basically used on the fire lock, it has a lock body, lock cylinder, fire handle, and the key. 2、Fire protection passageway lock:···

The safety padlock is specially designed for the locking and tagging device. In addition to being strong and lightweight, they are tagged to warn others that they are locked and tagged padlocks and ar···

Valve is in the fluid system, used to control the fluid direction, pressure, flow of the device. Valve is to make piping and equipment within the medium (liquid, gas, powder) flow or stop and can cont···

Definition of security locks: security locks are used for workshop and office padlocking, is a kind of locks. Is to ensure that the equipment energy is absolutely closed, the equipment remains in a sa···

1, locks can not be exposed to rain for a long time, rainfall contains nitric acid, nitrate, will corrode locks. 2, usually often keep the lock clean, do not let foreign objects into the lock cylinder···

1 Look at the surface treatment status locks are generally plated, sprayed or colored before leaving the factory, these steps for the lock itself is beneficial, because after this series of treatment,···