The R.J. Marshall company has been a trusted supplier of filler raw materials to the cast polymer manufacturing industry since 1978. We provide the filler raw materials a cast polymer manufacturer would need for every application and style, including beautiful Granite Effects in many styles and for all applications, as well as Alumina Trihydrate for solid surface. We service the Cast Polymer Industry not only in North America but also worldwide. Contact us on our website or phone to learn more about the R.J. Marshall Company.