Principle of mechanical code lock
The mechanical code lock operates in a unique way, using the dialing principle of the old telephone - starting from the starting point of the dial, turning the dial clockwise to a certain number, then returning to the starting point, and then entering a password.
Development and change of copper lock
Copper locks have a wide range of applications. Secondly, copper is not easy to rust. After years of polishing, the luster will become more soft and beautiful. At that time, the copper lock company took "serving the people" as the purpose of production and manufacturing service, rather than profit as the goal of pursuing quality.
Common faults and troubleshooting of padlock
The padlock is widely used in daily life. Since the parts are enclosed in the lock body, there is no need to install them during use, so there are few failures. If the padlock is used outdoors for a long time, the lock core and the lock beam will not jump.
The qualified rate of lock products is 92.2%
China Economic Network, Beijing, July 30 - On July 28, the General Administration of Quality Supervision, Inspection and Quarantine (AQSIQ) released the results of the national supervision and random inspection of the quality of lock products in the second quarter of 2015. According to the results, 7 batches of products produced by 90 enterprises in 3 provinces (cities) were unqualified, with a sampling rate of 92.2%.
Looking at the Leap of Lock Industry from the Development of China's Lock Base
The history of locks can be traced back to the wooden locks that appeared more than 5000 years ago. After several centuries of development, with the continuous development and progress of human society, the use and scope of locks have also been expanded, which forces people to pay attention to the development of lock production. At the same time, many inventions in locks have also made the lock industry start to flourish and make positive contributions to social civilization.
Advantages and disadvantages of stainless steel door locks
1. Stainless steel padlock is made of stainless steel, which is easy to be combined with doors and windows. Stainless steel padlocks are healthier and more environmentally friendly. The appearance is simple and practical. 2. The nature of stainless steel can determine its fire resistance, high temperature resistance and heat resistance. The stainless steel padlock program is not easy to be damaged;
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