In the late 1850s, the lock industry was not yet developed. Although the appearance of the safes changed with each passing day, the precision and reliability of the locks were not greatly developed. In the late 1860s, Americans invented the lock mechanism of the safe and the multi lock bolt technology, and the safety performance of the safe was greatly improved.
In twentieth Century 60s and 70s, because of the rapid development of semiconductor technology, the industry developed electronic locks, electronic locks also widely used in various types of safes. Then, LED, LCD digital display for the safe, user demand for fire has also spawned all kinds of fire protection products, the development of fingerprint recognition technology and promote the use of scanning fingerprint lock in the safe, popular card derived magnetic type safe