These premium locks incorporate more complex, multilayered locking mechanisms and patented designs that allow manufacturers to control the number of blank keys that are produced.
These premium locks incorporate more complex, multilayered locking mechanisms and patented designs that allow manufacturers to control the number of blank keys that are produced.
这些优质锁组成比较复杂，多层锁紧机构和充许制造商控制钥匙原坯生产数量的专利设计。