Petroleum Products, Water Products, Corrosion Products Established in 1987, ZCL Composites Inc. has grown to become North America's leading designer, manufacturer and supplier of cost-effective fibreglass storage tank systems to the petroleum industry. An unrelenting drive to manufacture superior fibreglass tanks that ?simply will not corrode?? has made ZCL the preferred choice in many industrial and retail sectors. ZCL offers underground and aboveground tank options that can be used for a variety of applications including storage of fuel / petroleum, potable water, wastewater and hazardous chemicals.