There was recently a burglary attempt in our apartment block (they did not manage to break in), and I would like to change my old door lock to a very modern and very secure, difficult to break-in lock.
Could anyone recommend a company you had a good experience with?
Are you talking about the blocks front door, or the interior door to your apartment?
Physically? I wouldn't worry about the lock but the door hardware (surrounding hinges and frame). If they're willing to make noise and bring the big red key, the lock is not going to help.
In this case it would make more sense to replace the door with a new one with integrated rods that lock into the doorframe.
Anyway, this is something you need to talk to your landlord about. Otherwise you might be required to re-instate the door as it was rented to you when you moved in.
You can replace your front door to one with a security rating. It might be cheaper and more secure to fit a security door in addition. This is actually common in Hong Kong. In front of each front door in an apartment is a metal security gate.
Thank you everyone. I am looking to change the locking system to the apartment (not building front door). Not only the lock with key but also the locking system itself.
If anyone can recommend a company, I would greatly appreciate it.