Customs as a protection against unfair trade procedures

Topic: Customs as a protection against unfair trade procedures
I want this chapter to be done with a lot of analysis, examples, the first subchapter should be about anti-dumping duties, second subchapter should be about protection customs/duties and the third subchapter should be about some other third type of protection customs. I need examples and analysis from European Union mostly and at least one example from Poland.
The aim of this chapter is to prove that customs nowadays are still take a very important role and that they protect enterpreneurs, economy and so on. Especially on polish market.