You are given a sentence in Polish. Your job is to translate the Polish sentence into Galician.

Plastiki mają pokrywające się gęstości w bardzo wąskim zakresie.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Os plásticos teñen densidades solapadas nun rango moi limitado.