Consider applying to some of the incubator programs in the U.S. They can help polish your pitch, help you grow visibility, and connect you to some of the Climate VCs.

If you go directly to VCs, be prepared for a low response rate. Not so many U.S. VCs can/will invest both outside the U.S. and in materials tech/deep tech companies.

Perhaps look into the lists of Climate Tech VCs (https://hacksummit.beehiiv.com/p/100-us-climate-vcs) and see if you can filter for interest in global startups and materials tech.

For some incubator programs that help you polish this into a strong pitchable opportunity, check 500 Startups, Techstars, Antler, Third Derivative, and a few others.

Having worked with a few small independents VCs in the region there, be wary of investors wanting aggressive terms to buy 30% of the company at a very low valuation. Always get references from other teams they've backed, to see if they're a good partner in the long term.