1. Small safe: suitable for storing a small amount of valuables, such as jewelry and documents. The rent is between several hundred yuan and several thousand yuan per year.

2. Medium-sized safe: suitable for storing more valuables, such as jewelry, antiques, securities, etc. The rent is between several thousand yuan and tens of thousands of yuan every year.

3. Large safe: suitable for storing a large number of valuables, such as a large amount of cash, precious works of art, etc. The rent is between tens of thousands and hundreds of thousands of yuan every year.