Cement walls have different hardness. When the cement wall is very hard that the screw can't be installed in, so how to deal with this situation?
Concrete screws, as the name suggests, are specially designed to nail things on hard media such as cement walls or brick walls, but sometimes cement nails are not so easy to use.
The cement label is different, and the hardness of the cement wall is also different. At present, many cement nails sold in hardware stores can't be nailed at all. Once nailed, the head will be knocked out or the nail body will be bent.

If some walls really can’t be nailed with a concrete screw, you may use expansion bolts or expansion bolts. No matter how hard the wall is, it can help handle it.

Expansion bolts or expansion bolts have a wide usage. The models are not the same, so basically it can be adapted to any wall surface and objects with different weights.

However, when using expansion bolts or expansion bolts, an auxiliary tool is also needed, that is, an electric drill. The head of the electric drill corresponds to the model of the expansion bolt, so you must have an electric drill.

The electric drill is actually very easy to use. So if you hang a series of photos, wedding photos, etc., it is better to use expansion bolts or expansion bolts.