SM series 雙舌中插芯 ·室外上提執手鎖門。 ·鎖體不分左右。 ·彈簧全部采用進口琴鋼線制作,可保證機械使用壽命十萬次。 ·本廠專利結構(專利號:ZL 02 2 43625.1),執手不分左右。 ·Door is locked by lifting lever or by key. ·Latch bolt can be easily changed to fit the door direction. ·Spring is made of wire imported from South Korea. 100,000 cycles are guaranted. ·Handle can be easily changed to fit the door direction.