What is the highest safety level of shredder?

At present, bonsai shredders are all common German standards, and the confidentiality level is divided into six levels. The shape and effect of chopping are as follows:

1 strip11.8mm.

2 pieces of 5.8 mm /3.9 mm

3 strips1.9mm.

3 sections 3.9x30mm/3.9 x 40mm

4 capsules1.9x5mm/2x15mm

5 filiform 0.78 x 1 1 mm

6 filiform 1x5mm

Choose different security levels according to the effect you want.