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 […]
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 […]
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