... .Professional China Lock factory 4.Past ROHS Key Switch Lock Description:1) Materials: Zinc Alloy dia cast housing and cylinder.2 ... in brass, zinc alloy and iron keys with plastic cover (2 keys)5) Key may be withdrawn in one ... Siemens,intel,lenovo and so on.Quality first and treat the customers as supremacy.Power Lock, Switch Lock, Electric Lock,Key Lock,Key Switch Lock, Electronic Lock Switch Key Lock