There's no middle ground for business at ZCL Composites. The company manufactures and sells fiberglass underground and aboveground storage tanks for hazardous liquids. In response to needs created by environmental regulations, ZCL Composites also offers fiberglass oil/water separators that reduce oil and fuel contamination of groundwater. It also makes fiberglass home heating oil tanks. Fiberglass is an ideal material for constructing tanks because it is noncorrosive and carries less risk of leakage. The company's primary customers are oil and gas companies in the US and Canada, though water and wastewater treatment is also a large market. ZCL Composites was founded in 1987.