Thank you for your interest in Shadetree Custom Composites!!!
All of our products are handmade in Jackson, Michigan, USA from quality materials.
We use a high quality, water clear aero-marine epoxy resin in everything we make. It is the same type of resin used to lay up aircraft wings and boat hulls; it is expensive, but it makes the best possible product for you, our customer. The resin cures hard, is highly chemical resistant and rated to a minimum of 280 degrees Fahrenheit.
Thanks again for looking!