Since 1976, Tri-City Marble, LLC has been manufacturing cast polymer products in Allentown, Pa. The company provides cultured marble vanity tops, shower receptors and shower walls in eastern Pennsylvania, New Jersey and Delaware. It makes standard sizes as well as fabricates custom components for special applications. The cultured vanity tops, collectively known as cast polymer, consists of four different material types, such as marble, onyx, granite and solids. Tri-City Marble LLC stocks various accessories as well, such as soap/shampoo holders, moldings, frame mirrors, bowl styles and deck edging. All the products of the company are National Association of Home Builders (NAHB) Research Center certified.