A company called Steps Material bills themselves as "a one-stop material selection platform for architectural designers." Based in Guangdong, they apparently have access to some unusual composites, like this "Bamboo Charcoal Fiber Board" that resembles stainless steel:

"It is made of bamboo charcoal base material, resin and polymer materials, and is formed through hot pressing and extrusion," the company writes.

A similar-looking offering is their "Bamboo Charcoal Wood Metal Plate."

The product page for this one features a diagram revealing the layers:

That said, they don't appear to offer Material Safety Data Sheets for their wares, so I imagine uptake in the 'States and the EU is slim.

If you'd like to browse some of the other wild-looking, vaguely-described materials they sell, check out their Instagram. But be warned, the demo videos are of the TikTok variety. An example: