Lol! You're grasping at straws here. It's so minimal.
Well, patch 1.42, released a year ago, was very small as well

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Also, it’s not the developers’ fault that the chemical trailer looks very like food one, so if you are not making the licensed product, you can use one model with minimum changes.
If look
on Kässbohrer site, you may see that their food and chemical tanks are very similar, and the biggest difference is the number of manholes on the top side — food one has three, chemical one has five, and
ETS version of the same length has four for both trailers

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