Figure on common process for polymer material fabrication does not have a figure number. It also appears to be a complicated figure with a lot of technical information without proper detail. Without prior knowledge about the polymer fabrication process, it might be too difficult to understand the figure content. Adding conclusion to this figure is also confusing. Is it the conclusion of the whole chapter or about what?

Learning objective looks very awful due to color. They could choose any light color instead of deep green for better visibility.

There is no caption and figure number

Better to provide the full chemical name instead of short form.

None of the figures has proper caption and figure number.

Figure on Polymer additives having unclear text. Too much information in one figure. Could be split into two or three figures.

Learning objective box color is awful. Any light color could be better for visualization.