| 1 | | Operaria | gijon |  ES | | | N/A | Ies | N/A | Houston, Texas, United States | Construction | Houston, Texas, United States | +1 9203370689 |
| 2 | | Operaria | madrid | ES | | | N/A | Psa Peugeot Citroën | N/A | Paris, Île-De-France, France | Automotive | N/A | N/A |
| 3 | | Operaria Soldadura | bilbao | ES | N/A | | N/A | Itp - Industria De Turbo Propulsores | N/A | Leicester, City Of Leicester, United Kingdom | Aviation & Aerospace | N/A | N/A |
| 4 | | Operaria | madrid | ES | N/A | | N/A | Psa Peugeot Citroën | N/A | Paris, Île-De-France, France | Automotive | N/A | N/A |
| 5 | | Operaria | barcelona | ES | N/A | | N/A | Grupo Moldtrans | N/A | Montcada I Reixac, Catalonia, Spain | Transportation/Trucking/Railroad | N/A | N/A |
| 6 | | Operaria | madrid | ES | N/A | | N/A | Repsol | N/A | Madrid, Madrid, Spain | Oil & Energy | N/A | +34 916302709 |
| 7 | | Operaria | barcelona | ES | N/A | | N/A | The Dow Chemical Company | N/A | Midland, Michigan, United States | Chemicals | Midland, Michigan, United States | +1 5024495200 |
| 8 | | Operaria De Servicios | bilbao | ES | N/A | | N/A | Osakidetza | N/A | N/A | Health, Wellness and Fitness | N/A | N/A |
| 9 | | Operaria | barcelona | ES | N/A | | N/A | Magneti Marelli | N/A | Italy | Automotive | N/A | +39 805395111 |
| 10 | | Operaria Laboratorio | N/A | ES | N/A | | N/A | Famar | N/A | Athens, Attiki, Greece | Pharmaceuticals | N/A | +30 2109898100 |
| 11 | | Operaria | fuenlabrada | ES | N/A | | N/A | Psa Peugeot Citroën | N/A | Paris, Île-De-France, France | Automotive | N/A | N/A |
| 12 | | Operaria | N/A | ES | N/A | | N/A | Crown Holdings, Inc. | N/A | Pennsylvania, United States | Packaging and Containers | N/A | +1 9136969881 |
| 13 | | Operaria | barcelona | ES | N/A | | N/A | Mecaplast Group | N/A | Monaco, Monaco | Automotive | N/A | N/A |
| 14 | | Operaria | barcelona | ES | N/A | | N/A | Itw | N/A | Glenview, Illinois, United States | Machinery | Glenview, Illinois, United States | +1 4155031478 |
| 15 | | Operaria | vigo | ES | N/A | | N/A | Mobo Usa | N/A | Doral, Florida, United States | Telecommunications | N/A | N/A |
| 16 | | Operaria | barcelona | ES | | N/A | N/A | Novartis | N/A | Basel, Basel-City, Switzerland | Pharmaceuticals | N/A | +1 8444283947 |
| 17 | | Operaria | barcelona | ES | | N/A | N/A | Accesa | N/A | Uruguay | Telecommunications | N/A | N/A |
| 18 | | Operaria | madrid | ES | | N/A | N/A | Liconsa | N/A | N/A | Pharmaceuticals | N/A | +52 8008006939 |
| 19 | | Operaria | madrid | ES | | | N/A | Iberia | N/A | Madrid, Madrid, Spain | Package/Freight Delivery | Madrid, Madrid, Spain | +34 901120223 |
| 20 | | Operaria | barcelona | ES | | N/A | N/A | Rm Trade | N/A | Netherlands | Textiles | N/A | N/A |