The history of the company is founded on its links with the largest fuel refineries of the lower Seine Valley.
The company ETS – i.e “ESSO Technologies & Services" was established in 1989 as a subsidiary of ESSO Research Centre, an EXXON corp. affiliate, located in Mont Saint Aignan (near Rouen), France in order to offer to third party companies services from the ESSO Research Centre. This affiliation ensured to ETS a double competence in terms of :

• formulation and analysis of lubricants, fuels and petroleum products
• combustion, engine testing, mechanical test rig

In 1997, ETS which employed 47 people became completely independent through a Management Buy Out and was renamed “Expertises Technologies & Services”. Business was growing quickly and steadily and as a result in 2002 employing near 300 people, ETS was divided in 3 companies corresponding to 3 areas of activities to ensure the best management of its growth :

• ETSA : ETS Analytical :
  - Analysis laboratories for petroleum sectors,
  - Quantitative and Qualitative Inspection,
  - Safety Management
• ETSM : ETS Mechanical :
  - Mechanical and engine testing
  - Powertrain and vehicle testing
  - Gearboxes and clutches testing rig
  - Engine and powertrain Development
• ETSP : ETS Products :
  - Formulation, Production, Distribution of specific petroleum products
  - Racing fuels and lubricants
  - Reference fuels and oils
  - Industrial and metal working lubricants
  - Specialty binders

In 2003, Air Liquide Innovation took over the shareholder leadership of ETSA.
ETSM and ETSP remained with the same initial shareholders from the beginning and continue to work jointly to provide to their customers a full service and skills. In 2004, ETSM opened its second new engine testing facility (called CESAME) in "The Madrillet Technopôle"(South of Rouen) France In 2005, ETSP has integrated its new manufacturing facility located in Bourgtheroulde( South of Rouen) France on a 22 000 square meter platform.