Corrosion normal on almost new Goodman furnace?

Hello,

I am wondering if it is normal to have some corrosion (likes like battery acid) on the outside of the furnace body in a couple places? It’s a Goodman furnace on natural gas, about 6 months old. It seems to be heating and venting fine.

Just want to see if this is normal or if I should have an HVAC service person come out and look at it.

Thanks in advance.

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