pu - SERP Analysis

https://www.merriam-webster.com/dictionary/Pu

https://www.mentalfloss.com/article/648465/what-does-pu-stand-for

https://www.collinsdictionary.com/us/dictionary/english/pu

https://en.wiktionary.org/wiki/P_U

https://www.youtube.com/watch?v=5_E5IwMdg5w

https://en.wikipedia.org/wiki/Polyurethane

https://www.pu.edu.pk/

https://www.chairoffice.co.uk/blog/what-is-pu-leather/

https://research.childrenshospital.org/research-units/pu-laboratory-research

https://www.huntsman.com/about/polyurethanes