There's no way that you're going to turn pvc black with heat or electricity without it burning or melting. It's a smooth, even black coating with no damage.
Show one example of blackened plastic where it's not smoke damage and where the plastic is not burned or melted.
In addition, burning requires oxygen or an oxidizer. Being under water means that there is no oxygen.
Show one example of blackened plastic where it's not smoke damage and where the plastic is not burned or melted.
In addition, burning requires oxygen or an oxidizer. Being under water means that there is no oxygen.
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