Metal bits from power supply

Hi everyone,

I just unboxed my new Corsair AX850 power supply, and I noticed that there were one or two very tiny pieces of what looked like steel wool that fell out of the cloth bag that the power supply was in. I shook out the power supply and other than a few flakes of black paint/plastic, nothing else came out.

Maybe these "steel wool" bits must have been from the manufacturing process? Do you think I am safe to use this power supply? I have already built my system and I don't want to unplug everything.

Thanks!