Q & A

Cold rolled steel plate Steel plate produced by a cold rolling process Cold rolling is made of hot rolled sheet coil as raw material, rolled at normal temperature and below the recrystallization temperature. Cold rolled steel plate is the steel plate produced by cold rolling process, referred to as cold plate. The thickness of cold-rolled […]

The door covers Terms of architectural decoration Door cover is a kind of architectural decoration term, refers to the door inside and outside the two door frames. Or they’re just called doorjambs. Its main role is to fix the door and protect the corner, decoration and so on. It is commonly used in the process […]

Video surveillance Part of the security system Video Surveillance is an important part of security system. The traditional monitoring system includes front camera, transmission cable and video monitoring platform. Cameras can be divided into network digital cameras and analog cameras, which can be used as front-end video image signal acquisition. It is a comprehensive system […]

In 1895, German overtone made the world’s first direct current hand drill. The shell is made of cast iron and can be drilled with a 4mm hole in the steel plate. Hand drill is a portable small drilling tool, which is composed of a small motor, a control switch, a drill chuck and a drill […]

Intelligent home system is based on the use of advanced computer technology, network communication technology, intelligent cloud control, comprehensive wiring technology, medical electronics technology in accordance with the principle of ergonomics, integration of individual needs, The various subsystems related to home life such as security, lighting control, curtain control, gas valve control, information appliances, scene […]

A screwdriver is a common tool used to turn screws in place, usually with a thin wedge head that can be inserted into the slot or notch of the screw head. Beijing-tianjin-hebei Lujin and Shaanxi northern Shaanxi and northern Henan dialect known as “screwdriver”, more northern Henan is called screwdriver, Jiangxi, Anhui and Hubei, Henan […]

A chisel is a steel tool with a cutting edge at the end of the handle or handle. A chisel is usually held in one hand at a right Angle to the surface of the object to be carved and struck with a MALLET held in the other hand. An engraver uses a chisel to […]

Fingerprints are the lines formed by the concave and convex skin on the end of the finger, which (seemingly) can increase the friction force of the hand when touching objects. (In fact, fingerprints reduce the friction force and make the skin more easily stretched and deformed, which can avoid skin injury, see the section of […]

According to the different principles of the lock core, anti-theft locks can be divided into bullet locks, blade locks, magnetic locks, smart card locks, fingerprint locks and so on. Technical specifications Security lock main technical indicators Serial number inspection item technical standard Class A (line standard) Class B (line standard) Super Class B (enterprise standard) […]

Equipped with anti-theft lock, in a certain period of time can resist the abnormal opening under certain conditions, with a certain security protection performance and in line with the corresponding anti-theft security level of the door. The full name of anti-theft door is “anti-theft security door“. It has both anti-theft and security performance. According to […]