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

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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).