UK PM Boris Johnson visits training facility in County Durham

The video tutorial introduces a company that focuses on providing training to local unemployed individuals, helping them gain skills for engineering roles. The company collaborates with employers to address skills gaps through tailored programs. Additionally, the video discusses a graffiti protection technology that prevents damage and reduces removal costs.

What is the purpose of the coating mentioned in relation to graffiti?

What strategy is suggested for dealing with graffiti in the text?