I thil neih security chu high-performance commercial mechanical mortise locks hmangin ti sang la, a chhe thei lo, rintlak leh venhimna tha zawk atan engineered. Heng heavy-duty lock te hi office building, hotel, retail store, leh institutional facilities te tan a tha hle a, construction nghet tak, key control, leh forced entry dodalna a pe thei a ni.