I have spent 12 years seeing floors fail under heavy machinery. For busy...

https://claytoncllo171.tearosediner.net/how-do-i-know-if-my-slab-is-good-enough-for-polished-concrete

I have spent 12 years seeing floors fail under heavy machinery. For busy warehouse zones, I recommend PU concrete. Expect to budget £45-£85 per sqm for a professional install that handles constant vibration. Keep your site moving safely!