The Origin of Locks
According to research, there are two centers for the origin of locks. One is Mesopotamia and Egypt, and then spread to Greece, Rome, the whole Europe, the British Isles, and then to the United States; the other is China, and then spread to North Korea, Japan and Vietnam. As one of the birthplaces of locks, China has a long history. In ancient times, because of the continuous development of productive forces, people gradually had a surplus. First of all, the surplus of food, and then the exchange...












