Zentyss is a registered trademark for thermal insulation panels made of extruded polystyrene foam (XPS) produced by OPAL TECHNOLOGIES. The manufacturing technology is one of the latest generation, which protects the environment. XPan extruded polystyrene thermal insulation panels comply with European standards and international agreements on emissions of substances that degrade the ozone layer, do not contain CFC – HCFC and HBCD compounds and do not contribute to global warming.