Buyang security door handle, wearing a down jacket arm, accidentally touched the handle, at this tim

I know of the normal ones and the handles with combination locks. There is also the handle of the fingerprint lock.

The handle outside the anti-theft door generally cannot be opened, which is an anti-theft design.

Copper, non-fading antioxidant is also better. Antique is lacquer, easy to fade and oxidize. However, to make sure that it is real copper or copper plated, do not imitate copper paint.

This has to find a professional person to adjust, and some handles need to be turned upside down.

The lock cylinder of the anti-theft door is determined according to the quality standards of the anti-theft door, if you want to buy the anti-theft door is a grade, its lock cylinder is generally above B level, the lock cylinder of the anti-theft door is currently divided into three types, namely A-level, B-level, super B-level (super B-level lock cylinder is also called C-level lock cylinder). Class A is a relatively ordinary lock cylinder with average anti-theft ability. Class B is better, and the anti-theft ability is better than Class A. >>>More