Association Française du Gaz Naturel pour Véhicules

Without any harm, the Ullit tanks take up to a 100 000 fills at 250 bars and maintain on the whole the same characteristics as a new device. Moreover, the materials used, in form of an internal envelope in thermal plastics and carbon fibres with epoxyde matrix, preserves the ULLIT tanks from internal and external corrosion.
Under a pressure of 250 bars, the permeability of natural gas, controlled by chromatography, is practically nil on a period of 28 days...

The industry has calculation facilities, a laboratory and control equipment whether destructive or not.
The insurance certificate on the ISO 9002 was obtained in 1999.
The production capacity is of 6 000 to 12 000 "pieces" per year, following the volume of the tanks.