Certain material shiny

I downloaded and imported a free asset related to factory from Unity.

Some materials were magenta colors, so we solved them in a well-known way,

Some of the other materials are shining completely brightly.

I did a lot of searches in this regard, but I couldn’t find a solution.

Does anyone know any solutions regarding this?

Additionally, I cannot find any controller about reflectivity. So simply adjusting reflectivity may not be a solution.