Marshall-Gruber offers all Gruber Systems' Process Control Equipment used for the production of Polymer Concrete, Cultured Marble, Cultured Onyx and Solid Surface Manufacturing and many other cast polymer and composites manufacturing processes. Marshall-Gruber offers expert technical pre- and post-sale support, installation, and other technical assistance.

Marshall Gruber Company is proud to be associated with these outstanding Distributors:

ICPA Logo 264 80

The International Cast Polymer Association, widely known as The ICPA, is a non-profit corporation made up of cultured stone and tile manufacturers, solid surface manufacturers, as well as their industry suppliers, distributors and affiliates. The mission of the ICPA is to enhance the success of the member companies and enlighten the market to the value of cast polymer products.

Marshall-Gruber Company LLC and its parent company RJ Marshall Company are members of the American Composites Manufacturers Association (ACMA).