Val d'Oise is home to a range of complementary industries and other business activities, based in a variety of established and emerging centers.
Persan-Beaumont, with its rich industrial tradition, is a source of balance for economic life in the northwest of département, not only through its established metallurgy businesses but also through a variety of advanced technology companies.
Sites along the Seine near Argenteuil-Bezons, Cormeilles, Herblay and La Frette are ideally located, offering rapid access to Paris and La Défense. Argenteuil-Bezons is home to aerospace, mechanical engineering and a variety of high-tech companies, as well as fine chemicals and plastics processing operations. The new Seinergie business park, served by a major motorway, confirms the sucess of earlier ventures that include "Harmoniques", "Algorithmes" and "Thales".
The Montmorency valley is best known as a prime residential area, but it also the site for numerous smaller businesses involved in advanced technology sectors, many of them sub-contractors to the mechanical engineering, plastics and electronics industries. Plans for larger industrial areas in the west of the valley with bolster the département's position as a base for services and offices.
| C.A. DES PLUS IMPORTANTES ENTREPRISES (en millions d’euros) | ||
|---|---|---|
| Nom | Activités | CA 2005 |
| BP France | Pétrole | 7.938 |
| Amec Spie | Ingénierie électrique, télécoms, services | 2.688 |
| Groupe DHL France | Transport et logistique | 2.000 |
| Général Motors France | Automobiles | 1.895 |
| 3M France | Pharmacie | 1.020 |
| Spie Batignolles | Travaux publics, BTP | 925,8 |
| Dow France | Chimie | 817,2 |
| 3M France | Adhésifs, bureautique | 706,5 |
| Bacou - Dalloz | Equipements de protection | 694,2 |
| Johnson Controls Automotive | Automobiles | 591,9 |
| L’EMPLOI DANS L’INDUSTRIE MANUFACTURIERE | |||
|---|---|---|---|
| Secteur industriel | Effectifs | Part dans l’effectif industriel | Part du Val d’Oise dans l’Ile de France |
| Total industrie manufacturière dont : | 43.700 | 100% | 8,3 % |
| Fabrication d’instruments médicaux, de précision, d’optique et d’horloge | 5.002 | 11,4 % | 12,8 % |
| Industrie chimique | 4.880 | 11,2 % | 7,5 % |
| Travail des métaux | 4.849 | 11,1 % | 13,8 % |
| Fabrication de machines et équipements | 4.559 | 10,4 % | 12,7 % |
| Industries alimentaires | 3.076 | 7,0 % | 6,4 % |
| Fabrication d’équipements de radio, de télévision et de communication | 2.810 | 6,4 % | 9,4 % |
| Fabrication de machines et appareils électriques | 2.775 | 6,4 % | 14,8 % |
| Industrie automobile | 2.526 | 5,8 % | 4,5 % |
| Industrie du caoutchouc et des plastiques | 2.080 | 4,8 % | 18,6 % |