Rock Hill Concrete has been providing building materials since 1947. It offers a variety of flowable fills, fibers, test cylinders and concrete colors. The company designs and undertakes residential and commercial projects. Rock Hill Concrete maintains three on-site concrete producing plants located in the United States. It produces and delivers products in accordance with standards set by the American Society for Testing and Materials, American Concrete Institute and Pennsylvania Department of Transportation. The company supplies concrete blocks that are used for retaining walls and landscape bins. In addition, it provides admixtures and lightweight concrete materials. Rock Hill Concrete is located in Catasauqua, Pa.