What would an Electrical Engineer do at a Copper Fab business?
This is not the job for you.  Walk away.

At best they are thinking of getting into a particular market area or serving it better, so they want someone on staff that can speak EE to customers and advise people in-house on how to do things in a way their EE customers would like.

At worst, they are (from your perspective) knuckle-dragging apes that have heard copper gets used for that 'tricity stuff and they want a wizard to get them to sell more of it to more of those 'tricity folks with the pointy ears but big wallets, so the pointy ears don't matter.  The guys on the factory floor will laugh at your pointy ears as soon as your back is turned, and the boss pretends to not notice because he'd be right there laughing with them if he weren't the boss, but he is, so he has to pretend.  They really have no idea what a electrical engineer does, and can barely spell "EE", so will think you're overpriced at half your normal rate.

The second case is clearly bad for anyone.  The first case isn't for you because you are too young.  There won't be a senior EE around to learn from, which at 25 is very important.  Even if there was, you'd be getting exposed to a dark and obscure corner of EE anyway.  This is simply not appropriate for your career at this time.  Even in the best case scenario, this requires someone with a decent amount of experience, not only knowing some EE and design practises, but more importantly, knowing how to deal with EE customers and how to be right, know you're right, and say "no" to mamagement when the situation calls for it.  A 25 year old should not be put into this position.  At a company with a real engineering department they'd know that, but I expect these people don't.  Run away.