鎖具
Drawer slide, Hardware lockset, Decorative hardwares. 滑軌，五金鎖具，裝潢五金。
Present invention refers to a lockset, especially a lock-in -lock, solving poor security of one key unlocking one lock. 鎖中鎖，它涉及一種鎖具，解決了一把鑰匙開一把鎖安全性差的問題。
