Diamond Fiberglass (also known as Carbon Silica Partners) is a company that manufactures custom-engineered fiberglass reinforced plastic (FRP) storage solutions. It offers single and double wall, mix, large diameter shop built, and other tanks, as well as process vessels, fiberglass composite structures, piping systems, etc. The company caters to the food processing, air pollution control, general chemical, water and wastewater treatment, and drilling and completion fluids industries.