If you are looking for information regarding products, they are typically flap discs used in metalworking and industrial grinding. For example, brands like PFERD offer a "POLIFAN" line of discs designed for high stock removal and long tool life.
: "A [color/type] [object] placed on a [setting], showing [specific detail]."
If you are trying to track down the origin of this image, try the following:
If this filename is part of a specific project, technical manual, or private archive you are working on, could you provide about where you found it or what the image is supposed to depict?
While there is no public "Pollyfan" brand or well-known cultural event associated with this exact string, we can break down what this type of keyword usually represents and how to handle it.