Locks have been playing an important role in people's life since they were invented. Locks are not only human daily necessities, but also cultural (folk) objects. They represent the culture of a country and nation in different historical periods. China's locks have lasted for thousands of years, and......

Lock is the most easily neglected hardware accessory in daily life. However, in daily life, we have to deal with all kinds of locks, which play a vital role in security. Most people neglect the management after the lock is installed, and basically do not maintain the lock. Xiaobian summarizes some t......