They are warning labels commonly found carton boxes. This image has a transparent background which can be used as an alpha channel.

If you are planning to create a carton box 3D model, you may want to consider Carton Box Cardboard Texture (Paper 0025) and Glossy Brown Duct Tape Texture (Others 0011).

It is a kind of cardboard texture which can be found on carton boxes. Wrinkled or folded marks can be found on the surface.

If you are planning to create a carton box 3D model, you may want to consider Caution Labels for Carton Boxes (Decals 0007) and Glossy Brown Duct Tape Texture (Others 0011).

It is the simplest form of cardboards which can be used to texture any kinds of cardboard products such as carton boxes.

The color of this material can be changed by using the SBSAR file.

It is a ripped cardboard exposing underneath wavy patterns.

Usually, the external and internal colors of a carton box paper are different.

By close examination, fiber texture can be found on the surface.

It is a corrugated carton paper, so stripes can be on this fiberboard. As the name "fiberboard" implies, it has a lot of tiny fiber texture on the surface.

Some fibers are soft, but some are hard. The difference in hardness gives easily recognizable patterns to the cardboard.