Since 1971, DE VIRIS - Parlym group - is specialized in Engineering, Studies and technical assistance for industrialists.

We operate in all trades project management, from the preliminary design to the site work support and supervision.

We collaborate with two subsidiaries: Sud Est Calcul for calculations and Peritec Ingénierie for specifications and regulations.
We collaborate with Parlym International - Parlym group too - in the turnkey projects made for export business (engineering and studies).


Thanks to our 250 staffs in 8 production sites- we play a major part in chemical, petrochemical, petroleum, gas industries and -recently- in energy.

By applying our multidisciplinary projects management we provide you a global answer. The project management is at the heart of our job.

The technical skills we gained on-site and an adapted continuous professional training give our team all the expertise needed.

Thanks to our technical watch we can provide solutions perfectly adapted to our clients’ needs and offer new technical and cost-effective solutions in line with the future requirements.