Cleaning head problem: the safety lock is not effective针对安全锁不生效的问题，请参照视频操作 For the problem that the security lock is not effective, please refer to the video operation. |
Cleaning head problem: the safety lock is not effective针对安全锁不生效的问题，请参照视频操作 For the problem that the security lock is not effective, please refer to the video operation. |