ZONEFIRST is the first company that successfully developed and marketed HVAC Zoning Systems back in the 1950's and is today a renowned manufacturer of HVAC zone dampers and zoning systems. They provide zone control systems, automatic dampers, registers and diffusers for fresh air intake, economizers and ventilation control.

ZOPPELLARO has been operating in the centralized air conditioning sector since 1975. They specialize in the design and construction of custom air handling units to air condition large environments such as hospitals, shopping centers, cinemas, industrial plants and accommodation facilities.

Zukunft Erdgas (Future of Gas) is the initiative of the German gas industry. They represent the brand and the product natural gas, as well as green gas and are contacts for politics, market partners, consumers and the media. They are involved in natural gas, power generation, heating market, heating, biogas, biomethane, hydrogen, power plants, fuel cells, LNG and power-to-gas technologies.