Air Liquide
Present in more than 70 countries, Air Liquide is the world leader in industrial and medical gases and related services and supplies over 1 million customers in numerous industrial domains (chemistry, metals, food, welding, …), electronics and health.. Founded in 1902, Air Liquide has nearly 36,000 employees. Sales in 2004 totaled 9,376 million euros, of which sales outside France accounted almost 80%.
http://www.airliquide.com

Trescal
The European leader of the calibration and measurement services. Its metrology services include calibration, repair, preventive and corrective maintenance and equipment pool management. Trescal is a subsidiary of the Air Liquide Group.
http://www.trescal.com

Trescal TIS-Livingston
Maintenance, Calibration and repair of test and measurement instruments. Accredited COFRAC metrology laboratories. Specialized in electrical metrology.
http://www.tis-livingston.fr

Trescal Metrotech
Maintenance, Calibration and repair of test and measurement instruments. Accredited COFRAC metrology laboratories. Specialized in dimensional metrology. Editor of the pool management software Hasting .
http://www.metrotech.fr

SCHOTT Instruments
http://www.schottinstruments.com