We must pay attention to the choice and use of the lock
1, choose a famous brand door lock with quality assurance.
2, pay attention to the same starting direction of the purchase door and door lock.
3, pay attention to the width of your door frame, can not be used for the ball lock handle less than 90CM on the door lock.
4. Do not wipe the lock and handle with a damp cloth. After the lock tongue is screwed into the lock body, close the door and release it, otherwise the service life of the door lock will be reduced.