SM series 双舌中插芯
·室外上提执手锁门。
·锁体不分左右。
·弹簧全部采用进口琴钢线制作，可保证机械使用寿命十万次。
·本厂专利结构（专利号：ZL 02 2 43625.1），执手不分左右。
·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.
