When used for a time, the lock may not be opened smoothly.Do not dip mechanical oil into the lock.Instead, slip some French chalk or pencil fines into it.

• 锁具使用一段时间后，会出现开启不顺畅的现象，不要往锁心内滴机油，将滑石粉或铅笔心的细屑滑入锁心内即可。