I’m not sure about e-white specifically (I’m honestly not even sure what it is); but I believe both cerakoting and powdercoating can produce matte-white finishes. Neither are cheap, but you’re not too unlikely to find a local hobbyist that has their own powder setup - they won’t charge as much as a shop that usually specializes in bigger pieces.
Edit: here is a little discussion and a video on ewhite; apparently it’s a distinct cousin of those other two finishing techniques involving an electrical charge to attract and bond the pigment.